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“Hawking Hawking”
Posted by SETI Institute on September 14, 2010
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By Dr. Mark R. Showalter Planetary astronomer at the Carl Sagan Center for the Study of Life in the Universe, SETI Institute It was just a few months ago that Stephen Hawking was making headlines with his bold assertion that extraterrestrial beings, if they exist, are best avoided. His argument was based in part upon…
From Galileo to Cassini — 400 Years of Saturn’s Rings
Posted by SETI Institute on July 23, 2010 By Dr. Mark R. Showalter Planetary Astronomer at the Carl Sagan Center for the Study of Life in the Universe, SETI Institute In 1609, Galileo introduced to the world his new invention, the astronomical telescope. It opened up new opportunities to explore a territory that all prior generations had regarded as familiar–the night sky. In…