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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 - New research indicates that the composition of a star may indicate whether or not the star supports orbiting planets. "Dirty" stars form from clouds of dust and gas that contain lots of heavy elements... and scientists believe these stars are good candidates for hosting solar systems. See article.
g ABODES - Scientists have provided the first quantitative evaluation of planetary habitability. The study shows how the habitability of Earth has changed in the past, and will aid astrobiologists in evaluating the habitability of other planets in our solar system and beyond. See article.
g LIFE - What are some biological concepts that are important for the comprehension of the exobiology? Nasif Nahle of BiologyCabinet.org explains. See lecture text.
g MESSAGE - The venerable Planetary Society hopes to take the search for extraterrestrial life to the stars with space-based platforms. See article. Note: This letter is from 2004.
g AFTERMATH - The "generic" evolutionary pathway of advanced technological civilizations is more likely to be optimization-driven than expansion-driven, in contrast to the prevailing opinions and attitudes in both future studies on one side and astrobiology/SETI studies on the other. See article.
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