These images mark an early milestone in the mission, confirming that OSIRIS-APEX is healthy and on course for its 2029 ...

The Moon is getting 1½ inches (3.8 centimeters) farther away from the Earth every year. Scientists measure the distance to ...

Around 4.5 billion years ago, a planet called Theia is thought to have smashed into newborn Earth. The messy collision kicked ...

Discover how scientists have used iron isotopes to determine the likely origin of the Mars-sized planet named Theia.

Look to the southeastern horizon in the hours following sunset on Nov. 29 — you'll be able to see the moon shine close to the ...

NASA’s OSIRIS-APEX spacecraft captured Earth and moon images during a gravity-assist flyby, confirming instrument functionality and maintaining course for its 2029 encounter with asteroid Apophis.

New research suggests Earth's Moon formed from the catastrophic collision of our planet with its \"sister\" planet, Theia, born nearby. This \"sibling\" p ...

Earth has a new moon-like object, known as a "mini-moon," orbiting our planet. This phenomenon is a temporary capture of ...

Sky watchers around the world are gearing up for one of the years most striking lunar events the Full Moon of December 2025, ...

The waxing crescent moon over the Walton Lighthouse in Santa Cruz, California, was beautiful all on its own. Then, it showed ...

About 4.5 billion years ago, a colossal impact between the young Earth and a mysterious planetary body called Theia changed everything—reshaping Earth, forming the Moon, and scattering clues across ...

Imagine biting into a crisp, garden-fresh salad and savoring juicy strawberries for dessert. But instead of your backyard, ...