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

Might the solar system harbor not just one, but two unknown planets? A fresh study of the Kuiper Belt’s structure has revived ...

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

An international team of astronomers has shown for the first time that it is possible to map exoplanets using a technique ...

What's special about Chiron's rings is that they're still forming; this marks the first time astronomers have ever seen a ...

Jupiter's rapid early growth dramatically reshaped our solar system, scientists now reveal. Its immense gravity acted as a ...

Astronomers have discovered asteroid 2025 SC79, a skyscraper-sized space rock orbiting the sun in just 128 days. the ...

A recent research paper suggests that a planet may exist far beyond Neptune — less than 20 years after the previous ninth planet, Pluto, was demoted. That research paper, accepted last month for ...

Rogue planets do not orbit around a star, but instead wander through the galaxy aimlessly. NASA estimates there are billions ...

Webb just spotted a carbon-rich moon factory 625 light-years away, revealing how moons like ours may have first taken shape.

The interstellar object 3I/ATLAS has gathered significant scientific attention, and soon it will reach its closest point to ...