Determining which small exoplanets have stony-iron compositions is necessary for quantifying the occurrence of such planets and for understanding the physics of planet formation. Kepler-10 hosts the ...

The Kepler-10 planetary system is clearly a place of extremes. It has a small, Earth-sized world that is half scorched, the first rocky world ever discovered by the Kepler mission. That’s Kepler-10 b.

Astronomers have determined that the planet Kepler-10c, discovered by NASA’s Kepler Space Telescope back in 2011 and thought to be a gas giant, is actually solid, making it an unprecedented ...

SEATTLE – NASA has discovered the smallest planet ever seen beyond our solar system – a rocky world just 1.4 times larger than Earth – using its planet-hunting Kepler observatory. The planet, called ...