The star system V1298 Tau reveals that many planets begin as large, low-density worlds that slowly shrink and shed their ...

Scientists measured mass and distance of free floating planet drifting through space without star for first time.

How far it is from the sun: 886 million miles (1.4 billion kilometers), on average How big it is: 72,400 miles (116,500 km) across, or almost 10 times the size of Earth. How many moons it has: At ...

Explore seven factual aspects of Jupiter, including its size, moons, rotation, atmosphere, rings, formation, and magnetic field based on NASA findings.

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 ...

The planet, if it is indeed a planet, is one of the most massive ever detected around a small star. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. If you haven’t heard, all the planets are in the sky at the ...

A rare celestial spectacle is gracing the night sky this February, as seven planets — Mercury, Venus, Mars, Jupiter, Saturn, Uranus and Neptune — are in the post-sunset sky in a phenomenon most ...

Stargazers are in for a treat this week as a planetary parade is set to take place - just a month after the last planetary spectacle. This latest planetary alignment or "planet parade" - set to take ...