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]]> Two Earth-Sized Planets Discovered https://teachingkidsnews.com/2011/12/21/two-earth-sized-planets-discovered/ Wed, 21 Dec 2011 14:46:52 +0000 https://teachingkidsnews.com/?p=4724 Two planets have been discovered, about 1,000 light years away from Earth.

Both of the planets are about the size of Earth. Kepler-20e is slightly smaller, and Kepler-20f is slighty larger than Earth.

The surface of the planets are too hot for water to exist on them; it would not be possible for life to exist on them either. They are hot because they orbit close to a star very much like our sun.

Kepler-20e has a termperature of about 760 degrees Celcius. (In contrast, Earth's average surface temperature is 14 degrees Celsius.)

The planets were discovered during a mission by NASA using the Kepler space telescope. They have been combing the skies searching for planets since about 2009.

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