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 ...

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

In the quiet hours before sunrise, the sky becomes a canvas of cosmic artistry, where the moon and Venus share a fleeting, ...

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 ...

Stargazers in the U.S. will witness the razor-thin waning crescent moon rise close to Venus and the bright star Regulus in ...

Early birds on Earth will have the chance to witness the moon teaming up with two planets to form a celestial smiley face this week. Between 30 to 40 minutes before sunrise on Friday, April 25, a ...

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

Watch the crescent moon, Venus and the bright star Regulus align in a rare predawn close conjunction tomorrow.

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