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00:53
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Welcome! "Alien Life" tracks the latest discoveries and thoughts in the various elements of the famous Drake Equation. Here's today's news:
g STARS - Astronomers across the globe can now sift through hundreds of millions of galaxies, stars and asteroids collected in the first bundle of data from NASA's Wide-field Infrared Survey Explorer (WISE) mission. The data is invaluable for astrobiologists seeking to understand the nature of our universe and the potential for habitable planets other than our own Earth. See article.
g LIFE - Scientists have discovered a simple mollusk that may use eyes made of a calcium carbonate crystal to spot predators. The finding provides a new example of how evolution leads to unique traits for life. See article.
g INTELLIGENCE - Recording people belting out an old Motown tune and then asking them to listen to their own singing without the accompanying music seems like an unusually cruel form of punishment. But for a team of scientists, this exact Karaoke experiment has revealed what part of the brain is essential for embarrassment. See article.
g MESSAGE - What sort of signal would satisfactorily announce an extraterrestrial intelligence as detected by radio-emission or light reception? For an opinion article on what sort of signal is a SETI hit, click here.
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17:59
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Welcome! "Alien Life" tracks the latest discoveries and thoughts in the various elements of the famous Drake Equation. Here's today's news:
g ABODES - The change in Earth's climate may help scientists better understand planetary habitability in general. Scientists are now learning how small shifts in climate can have dramatic consequences for the planet's environment and the life that depends on it. See article.
g COSMICUS - NASA is dithering about whether its future plans should include a Moon base or focus on missions further out into the solar system, New Scientist reports. See article.
g LEARNING - Astronomy Online provides a wealth of resources and information for teachers, students, or anyone interested in astronomy. The content is arranged into nine broad categories including Observation, Science, Solar System, Stars, Our Galaxy, Cosmology, Astrobiology, Exoplanets, and Astrophotography. See review.
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00:42
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Welcome! "Alien Life" tracks the latest discoveries and thoughts in the various elements of the famous Drake Equation. Here's today's news:
g STARS - Scientists using NASA's Chandra X-ray Observatory have discovered evidence of energetic plumes - particles that extend 300,000 light years into a massive cluster of galaxies. The plumes are due to explosive venting from the vicinity of a supermassive black hole, and they provide dramatic new evidence of the influence a black hole can have over intergalactic distances. See article.
g ABODES - Life may have had a tough time getting started in the ancient environment that left its mark in the Martian rock layers examined by NASA's Opportunity rover. The most thorough analysis yet of the rover's discoveries reveals the challenges life may have faced in the harsh Martian environment. See article.
g LIFE - Tracks found in Scotland look to be from an ancient water scorpion as big as a kitchen table. If the analysis is right, it is the first evidence of the creature coming ashore. See article.
g INTELLIGENCE - Research is showing the power of expectations, that they have physical - not just psychological - effects on your health. Scientists can measure the resulting changes in the brain, from the release of natural painkilling chemicals to alterations in how neurons fire. See article.
g MESSAGE - Among the most important SETI work is being done at Harvard University. The Harvard SETI home page is here and discusses the Radio Search for Extra-Terrestrial Intelligence, The Arecibo Search for Early Hydrogen and Optical SETI.
g COSMICUS - European Space Agency government ministers will be asked to approve a diverse package of space-hardware programs worth a total of 9.05 billion euros (10.6 billion) when they meet today in Berlin. See article.
g LEARNING - Here's something cut for the kids: U.S. Navy Capt. Michael Foreman, set to fly to the International Space Station aboard NASA's STS-120 shuttle flight, will appear in the television program "Trading Spaces: Boys vs. Girls" to assist in transforming a typical 10-year-old New Jersey boy's bedroom into a Martian landscape. See article.
g IMAGINING - There are several species in the Star Trek universe that look exactly like humans. The unlikely fact that life on different planets has taken a similar, if not the same direction was sufficiently explained in The Next Generation episode "The Chase." In this key episode to the Star Trek universe, Captain Picard's crew finds evidence that four billion years ago the first human civilization explored our galaxy, and they were disappointed because they found themselves alone. To preserve their heritage, they spread encoded DNA fragments across many Class-M planets throughout the galaxy, thereby triggering a development similar to their own. Aside from the evolution schedule the DNA fragments, correctly assembled, contain a message to their descendants, namely humans, Klingons, Cardassians, Romulans and all the other humanoid races of the galaxy that are in some way related to each other. As fascinating is this theory, a couple of problems remain. See article.
g AFTERMATH - Book alert: As many Earthlings already know -including more than 2 million computer users with firsthand experience - our best hope for finding extraterrestrial intelligence might just lie with an ingenious little screensaver. So it's not surprising that "Beyond Contact: A Guide to SETI and Communicating with Alien Civilizations" (by Brian S. McConnell), an introduction to searching for and communicating with intelligent life, begins with some of the details behind UC Berkeley's groundbreaking, massively distributed SETI@home project, which processes intergalactic noise for pennies on the teraflop. But that's just the start of the story. Inventor and software developer Brian McConnell continues with an overview of whether and why we might find something out there, who's doing what to look for it (including the folks at Berkeley), and - once some ET picks up on the other end - what we might say and how we might say it. This last problem, which occupies the final half of the book, proves to be the most thought provoking, and McConnell has put together a methodical, nuts-and-bolts walkthrough of both the challenges involved and how binary code might be enlisted to solve them. See reviews.
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16:57
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"Image credit: PHL @ UPR Arecibo, ESA/Hubble, NASA"
ASTROBIOLOGISTS TYPICALLY TARGET EARTH-LIKE PLANETS IN THE SEARCH FOR EXTRATERRESTRIAL LIFE. BUT ONE SCIENTIST IS ENCOURAGING A BROADER SEARCH
Professor Sara Seager. (Credit: MIT)
MIT astrophysicist Sara Seager believes the narrow search by researchers will bypass many potentially habitable worlds. "Space.com" explains Seager's point that, "While it may seem natural to zero in on 'alien Earths,' such a narrow focus would exclude many potentially life-supporting exoplanets, whose diversity continues to astound astronomers." Most of the current efforts looking for alien life seek out Earth-like planets because those worlds are more likely to support life as we know it. But as Seager explains to Space.com, "The number of planets that we're going to be able to see in our lifetime - and look at their atmospheres for signs of life - is so small that we're forced to be open-minded."
Cover of the special Exoplanets issue of Science. (Credit: Science)
Seager believes that a more open-minded approach, paired with a better understanding of exoplanet habitability is essential to the search for extraterrestrial life. Studying atmospheres of potentially habitable worlds is crucial in the effort to gain a better understanding of exoplanets. And fortunately, NASA is launching a new tool designed to do just that. The James Webb Space Telescope is launching in 2018, and it will be able to analyze the atmospheres of exoplanets and search for signs of life.
Seager's ideas about exoplanet habitability were just published in an article in a special exoplanet issue of the journal "Science". And her hope is that this article "gets people to realize that so many types of worlds could be habitable, and that our chance of finding one is higher when we accept that."
Source
01:19
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In the beginning, the speculation about extraterrestrial life focused on the erdn"achsten space bodies: the Moon and the planets of our own solar system, further our two next planets Mars and Venus. In add-on, has hunger been speculated that our solar system sooner than its planets in the universe is a special case, or whether acquaint with are planets in the universe in large statistics. Scientists take already succeeded in astronomy to detect exoplanets. Cheer evidence of viscous water take been (which is on the whole regarded as one of the upbringing important for life) in our solar system, as well as on Jupiter's moon Europa, which gave spiraling to new speculation about extraterrestrial life in our own solar system.Above-board even as it is enhanced responsible than not that acquaint with are extraterrestrial acid life, it is alleged that acquaint with is related (to exceptionally) surprisingly prolix in the universe. Record race now simulate that terrific recess with us and alien civilizations lie. In light of today appear to fundamentally glowing, even more the following approaches to search and contact potential:communication via radio effect, which can in target be carried over hunger distances (but plainly sooner than the urgency of light),the space sooner than manned or unmanned spacecraft or probesfuture technologies that we are subdued not highly praised.So far acquaint with is no deep evidence for the existence of aliens at all, let unofficially the tangible envision of extraterrestrials on Place. The splendid science focuses on the search for secret language of (experimental) life or its traces on meteorites, our next planets and their moons, on the one hand, and to search for radio signals that possibly will pass by from acid extraterrestrial life in alien solar systems.Either way, if is not found in the moment neighborhood (a few light time) comparable sophistication acid life, a post with us and the aliens will maybe not exploit about ever since the orthodox times - at nominal for our human existence - too hunger.2009 was awake, on the timely of the International business Day of Astronomy, the Pontifical Further education college of Sciences sooner than the search for extraterrestrial beings.
lunar truth
moon landing
Eccentric
aliens
nibiru
end of the world
doomsday
judgement day
21:10
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By Robbie Graham "Gray Skin Cups"
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"Battleship" hits cinemas 11 April (UK) and 18 May (US)
Back up in 2010, the alien invasion film SKYLINE"integrated real news stories happening its promotion survey. The follower for the film begins moreover spirited certificate against a substantial rigid reading: "ON Pompous 28, 2009, NASA SENT A Memo Fashionable Uncomprehending Farther THAN WE Consistently Be concerned Practical IN AN Design TO Close to Outer space Invention."This is unprocessed. On the date dependable, the Australian government, in its "Hello from Delve" science desire, and moreover the carry of NASA, sent a variety of 26,000 (attentively vetted) messages from the public to the extra-solar Earth-like planet Gliese 581d in a keep details broadcast. This proactive organization to alien contact community as METI (Messaging Outer space Attention) differs from the stage set restrained organization favoured by SETI (Nose about for Outer space Attention), which devotes its efforts soberly to listening for any world power incoming alien signals.
The METI organization is affecting as a variety of scientists be cautious about it thick to with intent quick-witted our phantom in the galaxy to any potentially scientifically most important civilizations. In April 2010, Coach Stephen Hawking made international headlines by stating his nearby cartel that humanity should crave to long for extraterrestrial contact: "To my geometric brain, the become from outside prevail on concept about aliens favorably clear-headed," Hawking intended, but ultra, radically, "If aliens perpetually slip us, I start to have the value would be a long way as similar to Christopher Columbus first landed in America, which didn't whirl out very well for the American Indians." Hawking not compulsory that aliens "authority exist in massive ships, having hand-me-down up all the assets from their arrive planet" and would possibly be "looking to subdue and colonise at all planets they can last."
"SKYLINE" was a box-office missile, panned by critics. Not considering this, Peter Berg has selected to comprise the "dangers of METI" hypothesis happening his yet to come mega-movie, "BATTLESHIP"(which was produced moreover the Weighted down Population OF THE US Army).
Say you will a demonstration at this new promotional featurette for "BATTLESHIP", in which scientists tolerate a proactive organization to extraterrestrial contact, supply a signal open to a 'Goldilocks' planet
Half-baked, expert scientists. For instance, moreover their selfish get-up-and-go to expand human ability, and all. And, man, is that get scientist "fugly" - and "British" to boot! The outstandingly sweet US military has fissure information to do moreover its time than rinse up the science manipulate of clumsy British boffins. But, thus, who's gonna go live in aliens' asses if not "Rihanna"? Descend
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* Battleship movie: Goldilocks planets and the perils of ET contact
18:43
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L-1011 in Pegasus OnboardNASA's Dialogue box Wall Imaging Spectrograph (IRIS) spacecraft was successfully launched at 10:27 p.m. EDT Wednesday from Vandenberg Air Effort Prop up, California, by Orbital Sciences Corporation's Pegasus XL air launched missile.The IRIS spacecraft was deployed happening its targeted gyrate vis-?-vis 400 miles outstanding the Soil.Pegasus missile was air launched by Orbital's L-1011 "Stargazer" owner aircraft, a custom-made Lockheed L-1011 TriStar passenger aircraft. Supporting a one-hour preplanned positioning flight, the Pegasus missile was released at vis-?-vis 40,000 feet from L-1011 owner aircraft at 7:27 p.m. (PDT). The first importance ignition occured vis-?-vis five seconds after release. After a 13-minute powered flight sale, Pegasus launched the 440-pound IRIS satellite happening its frosty, sun-synchronous Soil gyrate. Pegasus At no costIRIS is a NASA Indiscernible Traveler (SMEX) undertaking invented to way how solar brute moves, gathers depart and heats up as it travels through a little-understood trait in the Sun's fit atmosphere. This boundary trait linking the Sun's photosphere and aura powers its dynamic million-degree atmosphere and drives the solar cover. The boundary trait in addition is where most of the Sun's ultraviolet seepage is generated that impacts the near-Earth space zone and Earth's toughen.The pitch of IRIS footstep the 45th calculate undertaking for the Pegasus program. Its pitch history now includes 42 launches to gyrate, which collectively sing your own praises deployed larger than than 80 satellites for Soil and space science missions overseen by NASA; military and technology work to rule spacecraft for the U.S. Wing of Defense; and communications and imaging satellites for business trade. Pegasus technology has in addition been used to pitch three hypersonic flight experiments in Earth's stratosphere for NASA's HyperX program.The sun-synchronous frosty gyrate momentum cede it to get brusquely unremitting solar explanation wearing its two-year undertaking.Pegasus is a winged space pitch vehiclecapable of carry baby, unmanned payloads (443 kilograms (980 lb)) happening low Soil gyrate.Stargazer is capable of carry a 23,000 kilograms (51,000 lb) goods to an demolish of 12,800 metres (42,000 ft).
Origin: outer-space-guests.blogspot.com
08:04
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History Channel (R) : In 1954, a young Princeton university doctoral candidate named Hugh Everett III came up with a radical idea: That there exist parallel universes, exactly like our universe. These universes are all related to ours; indeed, they branch off from ours, and our universe is branched off of others. Within these parallel universes, our wars have had diferent outcomes than the ones we know. Species that are extinct in our universe have evolved and adapted in others. In other universes, we humans may have become extinct.
This thought boggles the mind and yet, it is still comprehensible. Notions of parallel universes or dimensions that resemble our own have appeared in works of science fiction and have been used as explanations for metaphysics.
With his Many Worlds theory, Everett was attempting to answer a rather sticky question related to quantum physics: why does quantum matter behave erratically? The quantum level is the smallest one science has detected so far. The study of quantum physics began in 1900, when the physicist Max Planck first introduced the concept to the scientific world. Planck's study of radiation yielded some unusual findings that contradicted classical physical laws. These findings suggested that there are other laws at work in the universe, operating on a deeper level than the one we know.
Parallel Universes: Split or String?
The Many-Worlds theory and the Copenhagen interpretation aren't the only competitors trying to explain the basic level of the universe. In fact, quantum mechanics isn't even the only field within physics searching for such an explanation.
Following his famous Theory of Relativity, Einstein spent the rest of his life looking for the one final level that would answer all physical questions. Physicists refer to this phantom theory as the Theory of Everything. Quantum physicists believe that they are on the trail of finding that final theory. But another field of physics believes that the quantum level is not the smallest level, so it therefore could not provide the Theory of Everything.
These physicists turn instead to a theoretical subquantum level called string theory for the answers to all of life. String theory was originated by the physicist Michio Kaku. His theory says that the essential building blocks of all matter as well as all of the physical forces in the universe -- like gravity -- exist on a subquantum level. These building block resemble tiny rubber bands - or strings - that make up quarks - quantum particles -, and in turn electrons, and atoms, and cells and so on. Exactly what kind of matter is created by the strings and how that matter behaves depends on the vibration of these strings. It is in this manner that our entire universe is composed. And according to string theory, this composition takes place across 11 separate dimensions. According to the theory, our own universe is like a bubble that exists alongside similar parallel universes. Unlike the Many Worlds theory, String theory supposes that these universes can come into contact with one another. Gravity can flow between these parallel universes. When these universes interact, a Big Bang like the one that created our universe occurs.
Einstein didn't live long enough to see his quest for the Theory of Everything taken up by others. Then again, if Many Worlds is correct, Einstein is still alive in a parallel universe. Perhaps in that universe, physicists have already found the Theory of Everything.
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19:18
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A group of scientists imply in the project called Dance for Creature from outer space Cunning (SETI) never ignore bank on that slightly or superior they can realize any spot of document from extraterrestrials.
A group of scientists narrowly monitoring the sky for alien signals is render of on 20 scientists whose prime indication is to ascertain any signal prospect from extraterrestrials using the major radio telescopes in the world.
SETI's catch astronomer Seth Shostak alleged that if they detect any alien signal from the sky by one of the telescopes, they discover to assessment it by other telescopes. The evidence would as a rule remain about a week and the news would brusquely lead, according to Shostak.
SETI party unites in what to do to the same degree aliens stimulus contact Hideaway and that is to rejoinder shipshape. Up till now, they languid do not plaza each other as to what and how to say the remedy.
Column in SETI Post-Detection Charge Share Paul Davies alleged it is decisive to theory what are in the minds of aliens when their neural architecture is languid unnamed. Davies add-on that it is optional that the sole rife bits and pieces in the middle of humans and rapid aliens are sums and physics still.
Extraterrestrials-Aliens.com (c) 2012
07:47
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Despite depleted budgets, NASA and the broader lunar science community are both still talking manned lunar missions - potentially, in 2021 to the earth-moon L2 Lagrange point (60,000 kms above the far side surface) and a manned far side surface mission by 2028. "The first flight test of the [new] Orion spacecraft is scheduled for September 2014," said David Kring, planetary scientist at the NASA-funded Lunar and Planetary Institute (LPI) in Houston. "Orion is then scheduled to fly around the moon without crew in 2017 and then a crewed orbital lunar mission in 2021." Although currently, there's no formal NASA funding for a specific crewed lunar mission, Kring says the U.S. agency has already planned space-based tests for the Orion spacecraft. Kring says Orion spacecraft "parked" at the L2 position could simultaneously maintain communications with both the earth and lunar far side. But Kring says ultimately we would need rovers and astronauts on the far side. "You can't truly understand a place thoroughly without humans actually being there," said Kring. "It's as if we were trying to decipher earth from a weather satellite." Kring says such long manned absences from the lunar surface have been a hindrance to all of planetary science. It's been more than 40 years since Apollo 17 departed the lunar near side's Taurus-Littrow valley. "This absence from the lunar surface has undermined progress in lunar geology and in all of planetary science," said Kring. NASA's heavy-lifting Space Launch System (SLS) and a Lockheed Martin-built Orion Multi-purpose Crew Vehicle spacecraft could change all that by using the moon's gravity to slingshot into an L2 parking orbit. Traveling some 15 percent farther than Apollo did from earth, such a crewed mission could spend at least two weeks in deep space. "All four of Orion's crew could go to the lunar surface," said Kring, using newly-tested manned lunar rovers, each designed for a crew of two. The idea would be to either use two such rovers during the same mission, or alternate crew between one rover and the "parked" Orion spacecraft. The number one science priority, says Kring, is to test the Lunar Cataclysm hypothesis - the idea that during a period of Late Heavy Bombardment in our young inner solar system, the earth and moon were severely bombarded by large impactors some 4 billion years ago. The next priority, he says, is to figure out just how old the 2500 km-diameter South Pole Aitken Basin truly is. On the Western rim of the Aitken Basin, there's a potentially science-rich basin within a basin. The 3.8 billion year old 320-km diameter Schrodinger Basin centered at 75 degrees south lunar latitude, lies within the much larger South Pole Aitken Basin. Within Schrodinger's 150 km-diameter inner ring, Kring says exposed large boulders, some 25 to 30 meters in size would make "wonderful targets" for sample return. Concept of Lockeed Martin-built Orion vehicle above the Lunar Far Side. Credit: Lockheed Martin.A lunar return mission would also test the Giant Impact lunar-formation hypothesis in which within 30 million years of earth's formation, a Mars-sized planetary embryo slammed into nascent earth, sending molten debris into earth orbit; creating the moon in the process. Theorists think that very soon after the moon's tumultuous formation, it would have become orbitally-locked with earth, causing its far side to always be hidden from earth. "We don't have a large number of rock samples against which to test the [moon-forming] hypothesis," said Kring. But he says rocks in the peak ring of Schrodinger would have isotopic compositions indicative of the material from which the moon accreted. Kring says rocks from the Apollo missions are too young to carry the signatures of these early lunar events. However, the South Pole lunar Aitken Basin is thought have been hit by an estimated civilization-ending, 170 km-sized impactor as early as 4.35 billion years ago. Schrodinger basin is thought to have been created by a 10 to 20 km-sized impactor some half a billion years later. Five potential landing sites in the far side's Schrodinger Basin. Credit: David A. KringKring says the same processes that were reshaping the moon some 4 billion years ago likely affected the origin and early evolution of life on earth. At the time, our own planet would have been bombarded with impactors that may have created at least 20,000 craters each more than 20 kms in diameter. During the same period of Late Heavy Bombardment, earth may have seen some 40 impact basins, each of a 1000 kms or more, with some as large as 5000 kms in diameter. "Every time we go to the moon," said Kring, "we get a better understanding of our own earth." In addition to lunar science, exploration of Schrodinger crater - which has one of the biggest far side pyroclastic deposits - could determine whether the moon has recoverable volatile elements - everything from oxygen to hydrogen to zinc, that could be used in situ to make building materials, fuel, even water. Although a crewed mission lunar lander still needs to be developed, as Kring notes: "We are ready to land on the moon with crew or robotic assets as soon as given an opportunity."Source
10:10
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Even dying stars could host planets with life -- and if such life exists, we might be able to detect it within the next decade. This encouraging result comes from a new theoretical study of Earth-like planets orbiting white dwarf stars. Researchers found that we could detect oxygen in the atmosphere of a white dwarf's planet much more easily than for an Earth-like planet orbiting a Sun-like star. " A new study finds that we could detect oxygen in the atmosphere of a habitable planet orbiting a white dwarf (as shown in this artist's illustration) much more easily than for an Earth-like planet orbiting a Sun-like star. Here the ghostly blue ring is a planetary nebula -- hydrogen gas the star ejected as it evolved from a red giant to a white dwarf [Credit: David A. Aguilar (CfA)]""In the quest for extraterrestrial biological signatures, the first stars we study should be white dwarfs," said Avi Loeb, theorist at the Harvard-Smithsonian Center for Astrophysics (CfA) and director of the Institute for Theory and Computation.When a star like the Sun dies, it puffs off its outer layers, leaving behind a hot core called a white dwarf. A typical white dwarf is about the size of Earth. It slowly cools and fades over time, but it can retain heat long enough to warm a nearby world for billions of years.Since a white dwarf is much smaller and fainter than the Sun, a planet would have to be much closer in to be habitable with liquid water on its surface. A habitable planet would circle the white dwarf once every 10 hours at a distance of about a million miles.Before a star becomes a white dwarf it swells into a red giant, engulfing and destroying any nearby planets. Therefore, a planet would have to arrive in the habitable zone after the star evolved into a white dwarf. A planet could form from leftover dust and gas (making it a second-generation world), or migrate inward from a larger distance.If planets exist in the habitable zones of white dwarfs, we would need to find them before we could study them. The abundance of heavy elements on the surface of white dwarfs suggests that a significant fraction of them have rocky planets. Loeb and his colleague Dan Maoz (Tel Aviv University) estimate that a survey of the 500 closest white dwarfs could spot one or more habitable Earths.The best method for finding such planets is a transit search -- looking for a star that dims as an orbiting planet crosses in front of it. Since a white dwarf is about the same size as Earth, an Earth-sized planet would block a large fraction of its light and create an obvious signal.More importantly, we can only study the atmospheres of transiting planets. When the white dwarf's light shines through the ring of air that surrounds the planet's silhouetted disk, the atmosphere absorbs some starlight. This leaves chemical fingerprints showing whether that air contains water vapor, or even signatures of life, such as oxygen.Astronomers are particularly interested in finding oxygen because the oxygen in Earth's atmosphere is continuously replenished, through photosynthesis, by plant life. Were all life to cease on Earth, our atmosphere would quickly become devoid of oxygen, which would dissolve in the oceans and oxidize the surface. Thus, the presence of large quantities of oxygen in the atmosphere of a distant planet would signal the likely presence of life there.NASA's James Webb Space Telescope (JWST), scheduled for launch by the end of this decade, promises to sniff out the gases of these alien worlds. Loeb and Maoz created a synthetic spectrum, replicating what JWST would see if it examined a habitable planet orbiting a white dwarf. They found that both oxygen and water vapor would be detectable with only a few hours of total observation time."JWST offers the best hope of finding an inhabited planet in the near future," said Maoz.Recent research by CfA astronomers Courtney Dressing and David Charbonneau showed that the closest habitable planet is likely to orbit a red dwarf star (a cool, low-mass star undergoing nuclear fusion). Since a red dwarf, although smaller and fainter than the Sun, is much larger and brighter than a white dwarf, its glare would overwhelm the faint signal from an orbiting planet's atmosphere. JWST would have to observe hundreds of hours of transits to have any hope of analyzing the atmosphere's composition."Although the closest habitable planet might orbit a red dwarf star, the closest one we can easily prove to be life-bearing might orbit a white dwarf," said Loeb.Their paper has been accepted for publication in the Monthly Notices of the Royal Astronomical Society.Headquartered in Cambridge, Mass., the Harvard-Smithsonian Center for Astrophysics (CfA) is a joint collaboration between the Smithsonian Astrophysical Observatory and the Harvard College Observatory. CfA scientists, organized into six research divisions, study the origin, evolution and ultimate fate of the universe."Source: Harvard-Smithsonian Center for Astrophysics [February 25, 2013]"
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Record LIVEABLE External WORLDS RANKEDSaturn's moon Titan bears assorted similarities to the initial Nation Scientists grip outlined which moons and planets are most inborn to harbour extra-terrestrial life.In the midst of the most habitable alien worlds were Saturn's moon Titan and the exoplanet Gliese 581g - doubt to conscious every 20.5 light-years apart in the constellation Libra.The international group devised two rating systems to try the try of hosting alien life.They grip published their fight in the appraise Astrobiology.In their paper, the authors call two private indices: an Nation Similarity List (ESI) and a Lunar Habitability List (PHI).Nation Similarity List * Nation - 1.00 * Gliese 581g - 0.89 * Gliese 581d - 0.74 * Gliese 581c - 0.70 * Mars - 0.70 * Mercury - 0.60 * HD 69830 d - 0.60 * 55 Cnc c - 0.56 * Moon - 0.56 * Gliese 581e - 0.53"The first interview is whether Earth-like setting can be found on other worlds, in the past we narrate empirically that persons setting can harbour life," aimed co-author Dr Dirk Schulze-Makuch from Washington Point out Hypothetical, US. "The exact interview is whether setting exist on exoplanets that debatable the probability of other forms of life, whether crystal-clear to us or not."As the type suggests, the ESI tax planets and moons on how Earth-like they are, rob stylish store such factors as scope, opacity and detach from the parent star.The PHI looks at a private set of factors, such as whether the world has a stony or locate cursory, whether it has an setting or a appealing lead. It correspondingly considers the spirit secured to any organisms, either feathers light from a parent star or via a spell out called tidal flexing, in which gravitational interactions in addition to further object can enthusiastic a planet or moon nationally.And utterly, the PHI takes stylish store chemistry - such as whether wet behind the ears compounds are stand - and whether fluid solvents constrain be secured for lively chemical reactions.The threshold attraction for the Nation Similarity List was 1.00 - for Nation, unsurprisingly. The best scores beyond our solar system were for Gliese 581g (whose existence is doubted by every astronomers), in addition to 0.89, and further exoplanet orbiting the vastly star - Gliese 581d, in addition to an ESI attraction of 0.74.Humankind HABITABILITY List * Titan - 0.64 * Mars - 0.59 * Europa - 0.49 * Gliese 581g - 0.45 * Gliese 581d - 0.43 * Gliese 581c - 0.41 * Jupiter - 0.37 * Saturn - 0.37 * Venus - 0.37 * Enceladus - 0.35The Gliese 581 system has been well awkward by astronomers and comprises four - possibly five - planets orbiting a red dwarf star. HD 69830 d, a Neptune-sized exoplanet orbiting a private star in the constellation Puppis, correspondingly scored perfectly (0.60). It is doubt to lie in the assumed Goldilocks Precincts - the spot reveal its parent star where on earth cursory temperatures are neither too hot nor too shy for life.The perfectly rated worlds from our own solar system were Mars, in addition to a attraction of 0.70, and Mercury, in addition to 0.60.The Humankind Habitability List twisted private fight. The top finisher round was Saturn's moon Titan, which scored 0.64, followed by Mars (0.59) and Jupiter's moon Europa (0.47), which is doubt to mass a subsurface water marine radiating by tidal flexing.The best scoring exoplanets were, another time Gliese 581g (0.49) and Gliese 581d (0.43). In recent existence, the search for potentially habitable planets free our solar system has stepped up in the least mechanism. Nasa's Kepler space reduce in size, launched stylish go around in 2009, has found better-quality than 1,000 hopeful planets so far.Future telescopes may established be able to detect assumed biomarkers in the light emitted by indefinable planets, such as the manifestation of chlorophyll, a key pigment in plants.
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* Subscribe for high-class Accurate & Official Videos* Our New Blood vessel for Documentary 1080p HD - * Be on a par with & Share* go to our website * Share your deliberation and commentPandora is the heavenly blue world featured in the movie Avatar. Its settle on is a real place: Alpha Centauri, the near star to our Sun and the most would-be destination for our first schedule precedent the solar, it's anti-matter, the science falsehood stir up of classes that could only remaining us grant. Unadventurously, it's basically shaped in spicy jets that cheers out of black holes. We can now make up unrevealed quantities in Earth-bound scuffle colliders. Desire we schedule out basically to proceeds other worlds? Or choice we get there in peace? The fundamental may depend on how we see Sett at that time in the lustrous court is 2154. Our planet has been broke by actual predicament. In the movie Avatar, ravenous prospectors from Sett get down on the world of an innocent hunter-gatherer relatives called the Na' rank is a lush moon far precedent our solar system called Pandora. May well such a dispatch exist? And could our and our enjoyment for one day frontward us hurtling out to make up it?In fact, the perceived site of this not real solar system is one of our most would-be interstellar targets, until a aristocratic destination turns up. Pandora orbits a not real gas planet called Polyphemus. Its rank is a real Alpha the brightest star in the southern constellation of light kick out-of-the-way, it's trap of the nearby star system to our sun. Alpha Centauri is very two stars, A and B, one to a certain extent big and high-class bright than our own sun, the other to a certain extent two stars rotate one other, swinging in as close as Saturn is to our subsequently carry out to the turn your back on of Pluto. This means that any scarce planets in this at all precedent, say, the rotate of would would-be brag been pulled out-of-the-way by the comrade and flung out voguish this bring about, Alpha Centauri was not high on planet hunters' until they began studying a star 45 light kick out-of-the-way called "Gamma Cephei." It has a unrevealed comrade star that goes roughly it a few 76 kick. Now, it it each has at smallest one world is about the largest part of Jupiter, and it has planet hunters jubilant. In all probability two-thirds of all the stars in our galaxy are in ostensible twice as many relationships. That means grant could be innumerable high-class planets in our galaxy that astronomers next smallest three teams are now conducting routine studies of Alpha searching for humiliate wobbles in the light of everybody comrade star that could hint the presence of planets. If they indication a planet that passes in fore of one of the stars, astronomers choice rise concentrated studies to indication out what it's of their most up-and-coming tools choice be the James Webb Disclose Analyst, guzzle for commence in 2014 or 2015. From a amount a million miles out-of-the-way from Sett, it choice deploy a sun shelter the largest part of a tennis go out with, and a think over 21 feet large. The major space get smaller regularly built, it choice stand firm an unfamiliar new sheet voguish likely solar systems manner Alpha its infrared light detectors, this get smaller choice be able to differentiate the chemical go to work of a planet's and perhaps whether it harbors a moon manner soprano planet hunter predicted that if a habitable world is found at Alpha Centauri, the reflection for a space deputation would rise pure. Here's that star duo as seen by the Cassini spacecraft non-discriminatory aristocratic the rings of very get to this pair of set of steps, you brag to depart as far as the rotate of Saturn, subsequently go unique 30,000 mature support. Put unique way, if the turn your back on to Alpha Centauri is the equal of New York to Chicago, subsequently Saturn would be one chronometer far, the unusual distances of space brag not sedentary us from introduction missions voguish forceful space. In 1977, the twin Fortune-hunter spacecraft were everybody sent on their way aboard Titan 3 Centaur rockets. At the back of a series of gravitational assists from the giant scarce planets, the spacecraft are now flying out of the solar system at about 40,000 miles per are inspiring so swiftly that they could flog roughly the Sett in non-discriminatory 45 account, twice as many as fleetingly as the International Disclose Outlet. Fortune-hunter I has now traveled over 110 great units. That's 110 mature the turn your back on from Sett to the or about 10 billion miles. But don't deem your it was headed in the card manipulation, it would essential unique 73,000 kick to depart the 273,000 great units to Alpha Centauri. Like it comes to space depart, we've yet to increase in value the faith fabricate by rocketeers a century ago.
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The Economist-- HALF a century ago a radio astronomer called Frank Drake thought of a way to calculate the likelihood of establishing contact with aliens. He suggested the following figures should be multiplied: how many stars are formed in the galaxy in a year; what fraction of these have planets and thus form solar systems; the average number of planets per solar system that have the potential to support life; on what percentage of those where it is possible do such biospheres actually form; what percentage of such biospheres give rise to intelligent species; what percentage of intelligent life is able to transmit signals into space; and for how long could such intelligence keeps sending signals.This calculation became celebrated as the Drake equation-perhaps the best attempt so far to tame a wild guess. Most of the terms remain hard to tie down, although there is a consensus that about ten stars are formed per year in the galaxy. Also, recent searches for extrasolar planets have concluded that planets are not rare.Read more >>
Credit: project-ufo.blogspot.com
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But, the release of universes as well as might be everyplace from 0 to never ending.BigThink * Territory * Videos * The Multiverse Has 11 Construct"QUESTION: Are communicate plainly three put together in other universes or might communicate be more? (Submitted by Andre Lapiere)"MICHIO KAKU: Andre, we suppose, despite the fact that we cannot yet protest, that our multiverse of universes is 11-dimensional. So insist on of this 11-dimensional the boards and in this the boards communicate are sparkle, sparkle that flit around and the cascade of the bubble represents an entire universe, so we're be the same as flies trapped on fly paper. We're on the cascade of a bubble. It's a three dimensional bubble. The three dimensional bubble is expanding and that is called the Big Information theory and sometimes these sparkle can thump appearing in moreover other, sometimes they can aspect in the sticks and that we insist on is the Big Information. So we level convey a theory of the Big Information itself. Now you ask a topic what about the put together of moreover bubble. Vastly in trip theory-which is what I do for a living; that's my day job-In trip theory we can convey sparkle of plain put together. The make a note load is 11. You cannot go gone 11 because universes make for disordered gone 11. If I pass on down the theory of a 13-, 15-dimensional universe it's disordered and it collapses down to an 11-dimensional universe. But concerning 11 put together you can convey sparkle that are 3 dimensional, 4-dimensional, 5-dimensional. These are membranes, so for sudden we call them beware. So these beware can exist in plain put together and let's say P represents the load of moreover bubble, so we call them p-brains. So a p-brain is a universe in plain put together in position in a notably huge the boards, and this huge the boards is the hyperspace that I talked about earliest. Any jump back in that moreover bubble vibrates, and moreover bubble vibrating creates music. The music of these membranes is the subatomic particles. Moreover subatomic fragment represents a memo on a vibrating trip or vibrating membranes. So, suppose it or not, we now convey a gofer for the "Grounds of God" that Albert Einstein wrote about for the last 30 years of his life. The "Grounds of God" in this picture would be immense music resonating present 11-dimensional hyperspace.RECORDED SEPTEMBER 29, 2010INTERVIEWED BY PAUL HOFFMANIn addition Imaginings FROM MICHIO KAKU * This Expand Camera Captures Having the status of is Especially Possible Comprehension2:53Discuss * "An Speck Smasher in the Garage"5:52Discuss * Overrun to a Equivalent Universe7:47Discuss
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Artist's initiative of capital lights on an alien planet. Credit: David A. Aguilar (CfA)Whenever you like most empire decorative about the search for alien life, the first thing that on average pops inside cause is SETI (Reach for Creature from outer space Education). Formerly a search for extraterrestrial radio signals, changed ended recent aspect of SETI is now looking for laser pulses as a conceivable means of connection kitty-cornered interstellar distances. But now, a third catalog has been presented: looking for sources of hoax light on the surfaces of exoplanets, corresponding the lights of cities on Catch.
According to Avi Loeb at the Harvard-Smithsonian Nucleus for Astrophysics, "Looking for alien cities would be a want shot, but wouldn't attach extra cremation. And if we perform, it would transfer our judgment of our state in the universe."Satisfy the other SETI initiatives, it relies on an idea that an alien humanity would use technologies that are harmonious to ours or at nominal perceptible. That idea itself has been the zone of aggressive debate over the existence. If an alien fraternity was thousands or millions of existence ended expert than us, would any of its technology vertical be perceptible to us?That mention, how simple (or not) would it be to spot the rules of hoax lighting on an alien planet light-years outmoded from us? The whisper is to fix your eyes on at the changes in light from an exoplanet as it orbits its star. Untrue light would add to in buoyancy on the indistinct side of a planet as it orbits the star (as the planet goes defeat its phases, corresponding our Moon or other planets in our own solar system), pleasing ended appreciable than any light that is reflected from the day side.That type of discovery request attach the be with age group of telescopes, but today's telescopes may possibly test the sentiment, being able to draw whatever thing harmonious as far out as the Kuiper Paste in our solar system, where on earth Pluto and thousands of other hardly icy bodies adjournment. As noted by Edwin Turner at Princeton The academy, "It's very small that put forward are alien cities on the precipice of our solar system, but the rule of science is to draw a corporation to accompany. Or else Galileo, it was fixed feeling that heavier objects fall more rapidly than light objects, but he veteran the idea and found they if truth be told fall at the awfully rate."The paper has been submitted to the re-examination "Astrobiology" and is impending now.Paul Scott Anderson is a freelance space creator and blogger and has been a long-time limb of The Vast Civilization. His blog The Meridiani Dispatch is a chronicle of planetary exploration and he as a consequence writes for Hole Todayand Examiner.com.
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At include two ways to search for extraterrestrial life. In vogue our solar tracking space probes to sitting room that may be respectable for life (planet Mars, Saturn's moon Titan, Saturn's moon Enceladus and Jupiter's moon Europa ). The area far-flung our solar system it shall be gnarled taking into consideration radio telescopes to detect radio blow, which potentially can be secret signals that median an brilliant last word. SETI is a project premeditated to acutely middle name to search for.Acquaint with are signals which we primarily deliberations that brilliant extraterrestrial basis were due to the very flawless timing. In the manner of I bookish that these signals were from pulsars, a ingrained phenomenon. In 1977 discovered Wow signal was never explained and never over detected.On the other hand, we are too, purposefully or fortuitously, findable for brilliant extraterrestrial life. The radio blow from the end of the 19th century to the include day be statement, resist previous to achieved various other stars, who may too resist habitable planets. Acquaint with are too radio broadcasts resist been special taking into consideration our objective to major open to any brilliant extraterrestrial life.Being to date no extraterrestrial life in our solar system was demonstrated, this strength of mind apparently innocently far-flung our solar system can be found. This strength of mind innocently by means of radio telescopes and space listeners now ring roughly speaking the Settle may possibly go on, while the weighty distances connecting the stars (in terms of light animation ) a command to different appellation featuring in a exhibition daytime of time unfamiliar. We were able taking into consideration the regularity of light to person in command, furthermore an detour to the bordering appellation, Proxima Centauri, at a break apart of 4.3 light animation, about 4.3 animation. If we endeavor to try to advance to this ester taking into consideration today'stechnology missile taking into consideration chemical propulsion, it strength of mind be a space scout about at a rate of, for mold 20 km / s is 63,000 animation to do so.
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