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

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

Astronomers are abuzz with the discovery of a rogue planet, 2MASS J05325346+0919037, which is set to pass within 0.05 ...

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

The James Webb Telescope captures the beginning of planetary formation around the young star HOPS-315 for the first time.

Tests on olivine hint that water-rich exoplanets could generate H2O internally, possibly explaining ocean worlds and even some of Earth’s early water.

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...

A coronal mass ejection on another star has been witnessed in its entirety for the first time, revealing that when these ...

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

ESO's Very Large Telescope has observed a rogue planet and revealed that it is eating up gas and dust from its surroundings ...

When evaluating possible planets out of the thousands out there, explained Prof. Bean, scientists look for liquid water as a ...