NASA’s orbiting Kepler telescope has discovered an unlikely pair of planets orbiting a distant star. One is small and rocky, the other is large and gaseous. What makes them unusual is that both are ...

NASA scientists working on the Kepler Mission have discovered an unprecedented solar system, in which two planets with vastly different densities and compositions are locked in a surprisingly close ...

Two planets with very different densities and compositions are locked in surprisingly close orbits around their host star, according to astronomers working with NASA’s Kepler mission. One planet is a ...

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The two planets circling Kepler-36, a sun-like star in its senior years, are as different as Earth and Neptune. But unlike the hundreds of millions of miles that separate our solar system's rocky ...

(CNN) — The discovery of a planetary “odd couple” is broadening the way scientists think about planetary migration. Scientists at the Harvard Smithsonian Center for Astrophysics and University of ...

CC0 Usage Conditions ApplyClick for more information. Imagine a gas giant planet spanning three times more sky than the Moon looming over the molten landscape of a lava world. This alien vista exists ...

NASA’s Kepler space telescope is busted and it may never work normally again. But during its four years of exemplary service, the planet-hunting telescope provided astronomers with an unprecedented ...

Few nighttime sights offer more drama than the full Moon rising over the horizon. Now imagine that instead of the Moon, a gas giant planet spanning three times more sky loomed over the molten ...