SETI bioastro: Mass extinctions, seed Mars with life, and Venus Revealed

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From: Larry Klaes (larry.klaes@incent.com)
Date: Fri May 11 2001 - 13:30:57 PDT


* Fifth Worst Mass Extinction Linked to Asteroid Impact

http://www.space.com/scienceastronomy/solarsystem/tj_extinction_010511-1.html?Enews=y

They call them the Big Five -- a handful of unfathomable mass extinctions over the past 500 million years, each estimated to have obliterated somewhere between 50 and 96 percent of all species on the planet.

* It's Time to Seed Life on Mars, Scientist Says

http://www.space.com/scienceastronomy/solarsystem/mars_seed_010514.html?Enews=y

It's been nearly 25 years since NASA sent biological experiments to Mars. Chris McKay, a planetary scientist at NASA's Ames Research Center and a member of the NASA Astrobiology Institute, thinks it's time to try again.

* Venus Revealed: New Telescope Peeks Beneath the Clouds

http://www.space.com/scienceastronomy/solarsystem/venus_peek_010511.html?Enews=y

A new radio telescope has combined with another to bounce radar pulses off the surface of Venus, revealing a mountain there taller than Mount Everest and showing off the capabilities of a new observational program.


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