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 ...

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Technicians working inside the Astrotech Space Operations facility near NASA's Kennedy Space Center look over the Kepler spacecraft soon after it arrived in Florida in preparation for launch. [Read ...

MOUNTAIN VIEW, Calif. (KGO) -- Astronomers with NASA Ames in the Silicon Valley have just found the most Earth-like planet ever discovered orbiting a distant star. This photo above is an artist's ...

On Earth, plants are green thanks to our Sun’s light—but Kepler-186f orbits a cooler, redder star. Here’s why alien vegetation might evolve with deep red hues instead of green. ‘Not Constitutional’: ...

Kepler-186f is a rocky little world in the Goldilocks zone around its star. It's the fifth planet from its parent star, and yet it orbits at a distance comparable with Mercury's orbit around our sun.

Welcome to Kepler-186 f. A distant alien world, bathed in the dim glow of its small star. Today, we're sending Chase on a ...