NASA has discovered a new super-Earth that has a year only lasting a few hours. The exoplanet K2-141b, was found very close to its orange sun-like star, and has an orbital period of less than one ...

The artist's concept depicts Kepler-186f , the first validated Earth-size planet to orbit a distant star in the habitable zone—a range of distance from a star where liquid water might pool on the ...

In October 2018, NASA's Kepler space telescope ran out of fuel after nine years of surveying the wider cosmos, looking for alien worlds. During its mission, Kepler discovered more than 2,600 weird and ...

Relative sizes of the newly discovered habitable-zone planets and Earth. Left to right: Kepler-69c, Kepler-62e, Kepler-62f and Earth (except for Earth, these are artists' renditions). Image credit: ...

SAN FRANCISCO — NASA’s Kepler mission already has found more than 1,200 potential alien planets, but it will likely be a few years before it hauls in the exoplanet “holy grail” — an alien Earth.

NASA’s Kepler Space Telescope has run out of fuel, and its mission has come to an end 94 million miles from Earth, the agency announced Tuesday. The deep space mission’s end is not unexpected, as low ...