New simulations suggest Venus' extremely slow rotation could have caused a hypothetical moon to spiral inward and collide ...

Venus may once have had a moon, but tidal interactions could have sent it back toward the planet under surprisingly common ...

Treating ancient Earth and Theia as solid geological bodies transforms simulations of the collision that may have created the ...

Venus is often called Earth’s twin. The two planets are remarkably similar in size, mass, and composition, and both formed in ...

A new theory suggests Venus may once have had a moon that spiralled into the planet because of its extremely slow rotation.

The 21-cm radio signal emitted by neutral hydrogen is like the proverbial needle in a haystack as it is buried beneath ...

In an unusual perspective for an Earth-observing satellite, the Copernicus Sentinel-2 mission captured this image of the moon, Earth's only natural satellite. The Sentinel-2 mission acquired this ...

Even most rocket scientists would rather avoid hard math when they don't have to do it. So when it comes to figuring out orbits in complex three-body systems, like those in cis-lunar space, which is ...

How did Earth get its Moon? New simulations suggest a Mars-sized body called Theia collided with Earth 4.5 billion years ago, and the Moon could have formed within hours.

China has launched an international science program to deploy a constellation of cube satellites - small, standardized ...