Alien worlds are a great way to indulge in those “what if” questions and watchers get a chance to see how different life ...

Moons of free-floating planets “will not be the most favorable places for life to arise,” says astrophysicist Alex Teachey, of the Academia Sinica Institute of Astronomy & Astrophysics in ...

Why is that some planets, such as Saturn, have more than a hundred moons, while others, such as Venus, have none? On Earth, you can look up at night and see the moon shining bright from hundreds ...

Mercury reaches its greatest elongation, 26 degrees east of the sun on July 4. From latitude 40 degrees north, the ...

A new paper from Harvard's sometimes controversial physicist Avi Loeb has suggested that if we want to find advanced alien ...

Some planets, such as Saturn, have more than a hundred moons, while others, such as Venus, have none. NASA/JPL-Caltech/Space Science Institute via AP ...

I'm a physics instructor who has followed the current theories that describe why some planets have moons and some don't.. First, a moon is called a natural satellite. Astronomers refer to ...

Any potential moons would likely get pulled in by the Sun instead. Many scientists are still looking to see whether these planets may have had small moons in the past. Back during the formation of the ...

Which planets – and planetary moons – could actually have life? How close could aliens be? These are the prospects that meet the specific conditions for life to be possible ...

Ultimately, the question of why some planets have moons is still widely debated, but factors such as a planet’s size, gravitational pull, Hill sphere radius and how its solar system formed may ...

If you looked at the churning clouds near Jupiter’s pole, they appear like ocean currents on Earth — as if you’re looking at ...

Starfield planets - all systems, moons, and worlds. There are over 1,000 Starfield planets, so here’s a guide to every colony world and star system we know of in this vast, open-world space game.