An object up to dozens of times the mass of Jupiter flying through our solar system may have disrupted planetary orbits.

The evolution of the orbits of the planets is a complex process. Initially the planets formed out of a rotating disk of gas ...

The odd atmosphere of a fledgling exoplanet is causing astronomers to question leading theories of how planets form.

"What If is an epic exploration of possibilities. What If is a Webby Award-winning science web series that takes you on a ...

The Hubble Space Telescope has been imaging the outer planets of our solar system for a decade, learning about their strange ...

Carrying out simulations to try and discover what best explains the orbits of these objects, the team found that a model that ...

Astronomers posed over the past decade that dark comets, or objects that resemble asteroids but move like comets, may exist.

It's possible for our solar system to capture a rogue planet and give it a home as it hurtles through the galaxy, according ...

The innermost Earth-like planet in the famous TRAPPIST-1 system might be capable of supporting a thick atmosphere after all, ...

Massive object passing through solar system is a better explanation for nature of orbits of Jupiter, Saturn and Neptune ...

The asteroid belt is messy and sometimes a threat to our solar system’s planets, so on this episode of Dead Planets Society it’s time to tidy it up into a single asteroid world ...

For billions of years, it's kept our ... The solar system is approximately 4.6 billion years old. Astronomers believe that roughly 100 million years into its existence, the planets first began ...