Planets usually stay close to their host stars, tracing steady paths shaped by gravity. Yet some planets break free and drift ...

Your weight changes on other planets and moons due to different gravitational pulls. Weight is how much gravity pulls on you; mass (amount of matter) stays the same. Newton's Law of Gravitation ...

Astronomers have spotted an Earth-sized planet drifting alone through the Milky Way, detected briefly by bent starlight, ...

Two small planets might be sculpting an enormous dust ring around the star Fomalhaut, a mere 25 light-years away from Earth. But it’s not too likely that either planet is the notorious Fomalhaut b, ...

If you’ve ever wanted to get a good look at what the surface of Mars looks like, NASA (and even Google) can quickly offer a view. But if you’ve wanted to get a better look at what the inside of Mars ...

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

Our solar system officially houses eight planets, but some scientists say there could be a ninth. And that’s not just Pluto aficionados – evidence suggests a huge undiscovered world lurks on the dark ...

Researchers have described a new, lower size limit for planets to maintain surface liquid water for long periods of time, extending the so-called Habitable or 'Goldilocks'' Zone for small, low-gravity ...

Whether you view it as an educational tool or a geeky space-themed desk toy, there is something incredibly cool about Kristoph Krisjans’ latest Kickstarter campaign. Having previously created the ...