Add Yahoo as a preferred source to see more of our stories on Google. Pluto and Charon appear in a composite of natural-color images obtained by New Horizons space probe on July 13 and 14, 2015. Image ...

Another day, another planet, right? Astronomers have discovered 861 new planets beyond the solar system. Most are the large, Jupiter-sized variety because they're easiest to detect. A few are ...

AMES, Iowa – An international team of astronomers has used nearly three years of high precision data from NASA’s Kepler spacecraft to make the first observations of a planet outside our solar system ...

The discovery of a strange new world about the size of Earth's moon has shattered the record for the smallest known alien planet, scientists say. The newfound alien planet Kepler-37b is the first ...

(CNN) -- It's not the kind of place you'd call home: an airless, rocky planet so close to its sun that some metals will melt on its surface. But it's a big little discovery for NASA's space ...

The Red & Black is a 501c3 nonprofit. Please consider a one-time gift or become a monthly supporter. Cancel anytime. This year, NASA authorized three newly discovered planets within the Kepler-37 ...