Planetary systems in the Milky Way galaxy tend to follow a particular pattern: rocky planets toward the center, closest to ...

NASA has announced the discovery of an Earth-like planet orbiting a Sun-like star that shares several other similarities with ...

The fourth planet in the system is a rocky world, while the second and third ones are gas planets.

NASA announced a new milestone in its search of the stars. It has now found more than 5,000 exoplanets -- those outside of our solar system. “It’s not just a number,” Jessie Christiansen, a researcher ...

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: ...

NEW YORK (PIX11) — A rare celestial event is going to happen on Saturday, Feb. 28. Stargazers will have the rare opportunity ...

When people speak of the northern lights, they are typically referring to Earth’s spectacular display of aurora borealis: green, purple, and red waves.

We’ve learned that Earth-sized planets aren’t alone out there. Thanks to missions like NASA’s Kepler and TESS telescopes, we’ve spotted dozens of rocky worlds ...

Astronomers have identified a frozen, Earth-sized world circling a nearby sunlike star, a find that sharpens the search for ...

Add Yahoo as a preferred source to see more of our stories on Google. (AFP/Getty) Scientists have spotted a “rogue” planet floating on its own through space. Most of the planets we know are found ...