Tuesday, September 22, 2009

Arctic astrobiology expedition ends and distinguishing ETI’s signal from stellar noise

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 - Black holes - those massive, invisible objects that suck in everything around them - may have appeared before the galaxies that host them. See article.
g Abodes - Astronomers who were dazzled by the 2007 explosion of a comet into the largest object in the solar system have discovered it gave birth to a bunch of baby comets. See article.
g Life - Enormous prehistoric armoured mammals called glyptodonts swung their spiked tails like baseball bats, according to a new study. See article.
g Message - Our most efficient attempts to broadcast our planet's existence to another civilization would resemble the thermal radiation emitted by stars. By analogy, more advanced worlds would likely do the same, making our chances of listening in hard to distinguish from hearing stellar noise. See article. Note: This article is from 2004.
g Cosmicus - Adrienne Kish reports from the field during the closing days of the AMASE 2009 Expedition to Norway's Svalbard island in the Arctic. As the mission completed, the research team simulated a week in the life of a Mars rover science team in preparation for a future Mars sample return mission. See article.
g Aftermath - If we find other civilizations, what will we say to them? Crafting a message that represents Earth and humanity and can be understood by another life form is no minor endeavor. SETI Institute psychologist Douglas Vakoch has been charged with this formidable task, and has enlisted the help of mathematicians, artists, astronomers and anthropologists. Hear the messages he helped compose and learn about the thinking behind them.

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