Monday, September 13, 2010

Tight binaries not great places for life and how trace elements influenced evolution of life

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 - Tight double-star systems with the dusty remains of huge planet collisions may not be the best places to look for extraterrestrial life, a new study has found. See article.
g Abodes - A study indicates that environmental availability of trace elements over Earth’s history influenced the selection of elements used by life as biological evolution progressed. Their results show that environmental concentrations of trace metals influenced which types of metal-binding proteins evolved, and the relative timing of their evolution. See article.
g Life - Is there life on other planets? That has been a question raised from the early beginnings of science fiction. The notion was scoffed at as pure mind play for dreamers and the occasional grifter selling rides to the Moon. At least it was until we were able to reach into space and discover new facts and gather new intel. See article.
g Message - Looking for life elsewhere is a tough task for human or robot. The good news is that the scientific skill and tools to search for, detect and inspect extraterrestrial life are advancing rapidly. See article. This article is from 2002.
g Cosmicus - Tiny rock-eating microbes could mine precious extraterrestrial resources from Mars and pave the way for the first human colonists, but would take much longer to help transform the red planet via terraforming. See article.

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