Researchers uncover how Mars affects Earth’s orbit, offering new insight into the planetary forces behind ice ages.

NASA has selected L3Harrist o develop advanced optics and mirror systems for the Habitable Worlds Observatory, a flagship space telescope searching for life beyond Earth.

Earth is the only life-supporting planet in our Solar System. Until now. Today, we’re bringing Kepler 22-b into our planetary ...

Pandora, the latest in a long portfolio of University of Arizona's space science missions, has cleared its last major ...

If scientists are able to inspect it in person, and they find that Mars was indeed once alive with microbes, we would know ...

A study has cast doubt on the idea that Jupiter's moon Europa, where NASA has sent a spacecraft, could have conditions to ...

The launch window for a small satellite developed in partnership with Lawrence Livermore National Laboratory (LLNL) opened this week at Vandenberg Space Force Base in Santa Barbara County.

So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't ...

The sun’s outer atmosphere resembles a pufferfish.

Each Monday, I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes ...

What seemed like new planets around Fomalhaut were actually expanding dust clouds from violent planetary collisions seen by Hubble.

Astronomers have uncovered a massive gas planet in a place it should never exist, orbiting one of the smallest stars in the ...