Monday, January 18, 2010

Life in other universes and how Earth-like planets survive their solar system’s birth

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 - Planets are thought to grow from swirling disks of dust and gas around stars. New simulations show how small planets like Earth can survive in these tumultuous environments instead of crashing into their host stars. The key is inward and outward migrations that trap the planets on orbits. See article.
g Life - Could our universe be just one among countess universes that emerged from the same primordial vacuum? And if so... could other universes be inhabited by life? In a recent article, theorists from Florida State University and the Weizmann Institute discussed these questions and the answers that physics may hold. See article.
g Message - The timescales of interstellar communication can be measured in two ways. First, we can compute them by the objective ticking of timepieces. Measuring time by a clock has the virtue of being objective and quantifiable, whether using a beloved old windup pocket watch or the latest atomic clock, accurate to one second in 20 million years. See article. Note: This article is from 2003.
g Aftermath - Book alert: Beep, beep, bop, be-bop. These could represent a new song or a communication from intelligent species on another world. With discoveries of more and more planets circling far away suns, there seems an increasing possibility that we have fellow, smart occupants sharing this universe. Michael Michaud takes this consideration seriously in his book Contact with Alien Civilizations. In a very forwarding looking text, he puts sound reasoning into analyzing the issues about if and when we find we're not alone.

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