One of the oldest unsolved riddles in planetary science concerns the origin of the moon. Over a century ago, George Darwin ...

An artistic rendering of a dust and gas disk encircling the young exoplanet, CT Cha b, 625 light-years from Earth.

Multiple impacts on Earth might better explain our moon’s origin than a single giant impact 4.5 billion years ago – and could help solve one of its biggest mysteries. Pinning down the origin of our ...

The James Webb Space Telescope measured a potential moon-forming disk encircling an exoplanet, NASA recently announced, inviting researchers to observe and study moon formation as it happens, while ...

Many of the most interesting bodies in our Solar System aren’t planets, but the moons that orbit them. They have active volcanoes, hydrocarbon oceans, geysers, and moon-wide oceans buried under icy ...

Two immense canyons on the moon's far side that rival Earth's Grand Canyon were produced by a cataclysmic collision nearly four billion years ago, according to new research published on Tuesday.

SCIENTISTS have discovered an unusual formation on Jupiter’s moon – and NASA says it may hold the secret to extraterrestrial ...

The moon's orbit isn't a perfect circle. Instead, it's more stretched out, kind of like an oval, which means its distance from Earth varies by about 30,000 miles (48,000 km). The surface of the moon ...