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An artist's rendering shows the Kepler spacecraft in its new mission profile, called K2. The space telescope has found a new planet outside our solar system.
December 18, 2014 The Kepler space telescope, which cost some $600 million, was feared to be at the end of its useful life in 2013. But NASA says it just found another exoplanet.
An artist's rendering of Kepler-186f, the first validated Earth-size planet to orbit in the habitable zone of a distant star.
T. Pyle/NASA/SETI Institute/JPL-Caltech
April 17, 2014 Kepler-186f is almost the same size as Earth, and it orbits in its star's "Goldilocks zone"-- where temperatures may be just right for life. But much is unknown because it's also 500 light-years away.
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An artist's rendition of Kepler-69c, a super-Earth-size planet in the habitable zone of a star like our sun, located about 2,700 light-years from Earth in the constellation Cygnus.
November 4, 2013 A team of astronomers crunching data from the Kepler space telescope say 22 percent of Sun-like stars harbor Earth-like planets.
An artist's rendition of Kepler-7b (left) with Jupiter for comparison.
October 1, 2013 Scientists publishing in Astrophysical Journal Letters say they've used space telescopes to record faint light from the distant planet to get a rough map of its atmosphere.
An artist's illustration of Kepler-22b, a planet that circles its star in the "goldilocks" zone.
August 16, 2013 Two of the four gyroscope-like wheels that keep the planet-hunting probe pointed in the right direction aren't working. NASA is exploring whether there might be other research projects Kepler can still carry out.
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This illustration shows the relative sizes of the habitable-zone planets Kepler-22b, Kepler-69c, Kepler-62e, Kepler-62f and the Earth.
June 5, 2013 Last week NASA scientists put the space telescope Kepler in a kind of technological coma. The craft, designed to search for Earth-like planets orbiting stars in our cosmic neighborhood (within a few thousand light-years, that is), failed and seems to be unfixable. But it has left us with an undeniable legacy.
June 19, 2012 For that one moment all the meaning and concern I schlep from one day to the next just evaporated before my small place in this very big galaxy.
A NASA illustration comparing the newly discovered planets to Venus and Earth. Kepler-20e is slightly smaller than both Venus and Earth. Kepler-20f is slightly larger.
December 21, 2011 Though scientists don't think the planets could sustain life, they say their discovery is significant because it shows that we can now detect planets that are roughly the same size as our own.
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