A distant gas giant the size of 10 Jupiters is now the first planet outside Earth's solar system to be mapped in three ...

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

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

Researchers are studying eccentric warm Jupiters, giant exoplanets that follow odd, elongated orbits unlike anything in our solar system.

A peculiar interstellar visitor, 3I/ATLAS, is challenging comet theories with its sunward tail and unusual composition. While ...

Earth and the sun in our solar system - Drpixel/Getty Images When you see art of our solar system as the planet orbit the sun, you may notice that Earth's orbit has a tilt. It is not a perfect circle.

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

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

A new study led by UNLV scientists sheds light on how planets, including Earth, formed in our galaxy—and why the life and ...

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 dubbed ...

Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining ...