The Earth's Moon is its only one, but scientists recently discovered a new celestial body that will be staying near the planet for the next several decades.

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

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

It’s often assumed that Earth is somehow separate from the rest of the universe. Yet changes in environments across the solar ...

Jupiter is the fastest spinning planet in our Solar System, completing a rotation in less than 10 hours. This rapid spin ...

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

What: Astronomers using JWST and ALMA have captured the earliest known stage of planet formation around the protostar ...

Manhattan-sized comet 3I/ATLAS — which scientists suspect could have extraterrestrial origins — will reach its closest ...

This discovery was made by two of NASA’s most celebrated telescopes. This illustration provided by Dan Durda shows the exoplanet Kepler-1625b with a hypothesized moon. On Thursday, Oct. 4, 2018, two ...