Why Can't We Find Planet 9? Deep in the outer reaches of our solar system, far beyond Neptune and Pluto, something massive is ...

Jupiter harbors more oxygen than the sun, a new study finds, giving astronomers a crucial clue about how our solar system's ...

Unlike earlier studies, which often examined chemistry and atmospheric motion separately, the new simulations combined both.

There have been questions about a mysterious ninth planet in our solar system for nearly a decade. Pluto was unseated as number nine in 2006. Now, a group of international researchers say they may ...

New research using detailed atmospheric models shows Jupiter contains excess oxygen, helping explain its origins and deep atmospheric dynamics ...

We’ve sent spacecraft to every planet in the solar system, but none of them are truly safe to explore. Each world destroys ...

What was originally thought to be a planet orbiting the Fomalhaut star was probably just the fallout of a wild collision.

LONDON — The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper's authors have ...

A rare triple conjunction of Venus, Mars and Mercury is happening on the opposite side of the solar system to where Earth is, ...

NASA has confirmed that there are over 6,000 exoplanets floating out there in the galaxy, with another 8,000 exoplanets that ...

So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't ...