Astronomy Cast Ep. 34: Discovering Another Earth

http://www.astronomycast.com/archive/


From April 29, 2007.


What a week! Astronomers announced the discovery of an
Earth-sized planet orbiting the nearby star Gliese 581! We talk
about the technique used to discover the planet, the
possibilities of finding even smaller planets, and what the
future holds for finding another Earth.


 


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