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Published January 10, 2011
The smallest planet yet spied outside our solar system has been found orbiting a sunlike star about 560 light-years away, astronomers announced today. Known as Kepler-10b, the planet is just 1.4 times Earth's size and 4.6 times its mass.
The planet, found using NASA's Kepler spacecraft, is the first of the more than 500 known exoplanets that's definitively rocky—much like Earth, Mars, Venus, or Mercury—the study team says. Launched in March 2009, Kepler was designed to hunt for potentially habitable Earthlike planets.
Astronomers have been studying Ke
Originally posted by tom502
I think the extremes of big and small are amazing. Our planet is like a spec of sand compared to others, which makes me think other planets could be like a spec of sand to ours. Alien beings could be enormous giants beyond comprehension, or so small we could not see them with our eyes.