Solar System

The dwarf planet Haumea may be the weirdest object in the solar system. Now NASA researchers may finally understand how it was formed.

NASA will continue to develop its troubled Psyche asteroid mission, with the aim of launching it in October 2023 — a year later than planned.

The boundary between the heliosphere and the interstellar medium appears to be moving in an unexpected manner.

Uranus is a strange world, knocked on its side and with a lopsided magnetic field. Its moons may be even stranger.

Astronomers have captured the shadow of the space rock Didymos, target of NASA's asteroid-smashing mission, as it passed in front of distant stars.

The near-Earth asteroid Ryugu formed far from the sun, in the cold depths of the outer solar system, according to new analysis of samples returned from Ryugu by the Japanese Hayabusa2 mission.

Five years after spotting 'Oumuamua, the first known object from beyond our solar system passing through, scientists are still figuring out what the strange object says about planetary systems.

Scientists have uncovered a new mystery about Uranus' rings buried deep in data from NASA's iconic Voyager 2 mission.

Shallow lakes of salty liquid water throughout the crust of Jupiter's moon Europa could cause cryovolcanic eruptions and plumes of icy material to burst from its surface.

Astronomers have revealed the most stunning and detailed images of Europa and Ganymede, two of Jupiter's largest moons, ever obtained from the surface of Earth.

NASA's Dragonfly mission to Saturn's largest moon will touch down on a terrain of dunes and shattered, icy bedrock, according to a new analysis of radar imagery from the Cassini spacecraft.

Fabulous portraits of Jupiter's mysterious icy moon Europa captured by NASA's Juno mission reveals the moon, which may possibly harbor life, in unexpected colors.

NASA's Lucy spacecraft still has five years of trekking through space before it sees its first Trojan asteroid, but mission scientists are already getting a sense of what these rocks look like.

Uranus is just plain weird, and one of the weirdest things about it is its tilt.

In 2019, the Hayabusa2 spacecraft collected samples from the asteroid Ryugu. Now, an analysis of these fragments has revealed Ryugu's history.

Astronomers know of only a few dozen examples of these active asteroids, but they suspect more are out there — and you can join the hunt.

The solar system's most massive planet, Jupiter, will make its closest approach to Earth for 59 years on Sept. 26 even as the gas giant will be directly opposite the sun as viewed from Earth.

Strange hexagonal diamonds may have been jettisoned into space when a dwarf planet collided with a large asteroid around 4.5 billion years ago.

The iconic Voyager spacecraft seen through the eyes of an archaeologist.