07-12-2011, 13:20
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#39
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Still alive and fighting
Join Date: Jun 2007
Location: In the land of beyond and beyond.
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Posts: 56,309
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Re: Astronomy
http://www.bbc.co.uk/news/science-environment-16040655
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Astronomers have confirmed the existence of an Earth-like planet in the "habitable zone" around a star not unlike our own.
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The planet, Kepler 22-b, lies about 600 light-years away and is about 2.4 times the size of Earth, and has a temperature of about 22C.
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The Kepler space telescope was designed to look at a fixed swathe of the night sky, staring intently at about 150,000 stars. The telescope is sensitive enough to see when a planet passes in front of its host star, dimming the star's light by a minuscule amount.
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In total, the results suggest that planets ranging from Earth-sized to about four times Earth's size - so-called "super-Earths" - may be more common than previously thought.
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“The only lesson you can learn from history is that it repeats itself”
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