Earth is the only planet in our solar system with a single moon, making it a rare phenomenon for a planet of its kind.

Recent scientific research has unearthed an intriguing proposition that Earth may have once been orbited by two moons instead ...

Researchers are discussing 2025 PN7, a small celestial body that's following a similar orbital path to our planet's without being gravitationally tied to Earth ...

The Earth stands alone in the solar system as a habitable world, as far as we know. But that doesn’t mean we don’t get visitors, most often in the form of (usually harmless) asteroids. Some even ...

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 ...

Astronomers have discovered what they think may be another moon orbiting a distant dwarf planet called Quaoar. This small, ...

Two moons orbit Mars, and one of them may be on a path to extinction. However, will this prediction actually come to pass? Here's more about what's happening.

So the bottom line is that the gravity of the closer tidal bulge on the Earth is pulling the Moon forward, which increases ...

Analysis by researchers at the University of Bern suggests that water and other volatile compounds arrived on Earth from ...