The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...

Earlier research held that meteorite impacts from the solar system's early days were a major source of Earth's water.

Earth’s atmosphere is slowly leaking into space, and new research shows some of it reaches the Moon, where it may be ...

Earth's quasi-moons are not actually moons, but temporary asteroids that eventually leave Earth’s orbit JPL-Caltech/NASA A new "quasi-moon" named 2025 PN7 has been discovered, according to a ...

It was long thought, up until recently, that asteroids and comets delivered Earth's oceans during the early Solar System.

The craters bear the names of astronomers who revolutionized our understanding of the night sky.

A new NASA study using Apollo lunar soil samples challenges a long-held theory. It suggests meteorites were not the primary ...

According to observations of young ridges see on the far side, Earth's moon is not geologically dead, as previously believed.

The Moon is a pretty peculiar object. It is believed that it formed from the incredible collision between the proto-Earth and ...

For a long time, scientists assumed that Earth's water was delivered by asteroids and comets billions of years ago. This coincided with the Late Heavy Bombardment (ca. 4.1 to 3.8 billion years ago), a ...

The Moon is working its way through the lunar cycle.