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

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

The solar system is composed of the sun, eight major planets, five dwarf planets, over a hundred moons, and countless comets ...

One of the most notable properties of the giant planets in our solar system—Jupiter, Saturn, Uranus and Neptune—are the ...

Astronomers are investigating a strange class of exoplanets known as eccentric warm Jupiters — massive gas giants that orbit ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

“Overall, our findings challenge the conventional classification of Uranus and Neptune as ’ice giants’ and underscore the ...

Discover Snapchat Planets, the new Solar System feature on Snapchat+ that ranks your best friends as planets. Learn meanings, ...

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

Astronomers have made an unexpected and groundbreaking discovery in our solar system—a ring system forming around Chiron, a ...

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