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 ...

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

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 ...

Despite its small size, Mars seems to have a huge impact on the orbital cycles that govern Earth’s climate, especially those ...

The findings are a big clue as to why the far and near hemispheres of the moon look so different.