There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on?

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

Could a lonely planet wander aimlessly through the restless galaxy change the subtle dance of gravity within our solar system ...

When you look at the solar system, you might notice that the planets' orbits are tilted, and oddities in the protoplanetary ...

We all need some space sometimes—but it's harder to find than you might think. How far into our universe do we have to go to ...

Astronomers say the water that fills Earth's oceans — and the stuff you use to brew your morning cup of coffee or tea — may be older than the sun itself.

Students for the Exploration and Development of Space (SEDS) is more than just a club for students who are passionate about ...

From lava worlds to gas giants, NASA says the variety of these worlds is staggering—and that signs of a further 8,000 distant ...

The universe is truly magical: vast, mysterious, and endlessly fascinating. There’s something almost unreal about being able ...