Saturday, April 12, 2008

Habitable zone for Tau Ceti and first impressions on celestial correspondents

Welcome! “Alien Life” tracks the latest discoveries and thoughts in the various elements of the famous Drake Equation. You may notice that this and future entries are shorter than usual; career, family and book deal commitments have forced me to cut back some of my projects. Now, here’s today’s news:
g Stars - What is the habitable zone for the famous nearby star Tau Ceti?
g Abodes - Scientists discuss whether or not microbial life could survive inside Saturn's moon Enceladus. Based on observations of microbes on Earth that can live in environments absent of sunlight and oxygen, the researchers have outlined potential scenarios for how life might exist on the unique moon. See article.
g Life - Scientists have provided evidence that the building blocks of life could have formed from the interactions of desert heat, water and meteorite impacts. The findings may also explain why amino acids used by life are predominantly 'left-handed'. See article.
g Intelligence - Two MIT scientists have used nanotechnology to reconnect brain cells. See article.
g Message - If some day we decide to transmit intentional messages to the stars, rather than solely listen as current SETI programs do, what would we say? What sort of first impression would we want to give our celestial correspondents? See article.