Solar System

Lagrange found that the difference between an object's kinetic energy and potential energy unlocked something deeply profound about the universe.

Impressive infrared images of Jupiter's auroras were processed by citizen scientist Judy Schmidt.

The Voyager missions are icons of cosmic exploration, and you can celebrate their 45th anniversary with a free webcast tonight (Aug. 18).

The twin probes, launched in 1977, made groundbreaking discoveries about the solar system and inspired future space missions.

Voyager 1 and Voyager 2 continue their slow journeys deep into interstellar space.

Ancient grains of dust that are older than the solar system itself have been found in samples from asteroid Ryugu brought to Earth by the Japanese Hayabusa2 spacecraft nearly two years ago.

Scientists using new computational methods have come up with a new insight into the potential workings of the complex atmosphere of Venus.

A new model exploring the dwarf planet Ceres suggests radioactivity deep in the small world may have created criss-crossed geology at its surface.

The inner solar system spins much more slowly than modern physics would expect, and a new study may help to explain why.

NASA's Psyche asteroid mission is moving into a review after software testing issues forced an extended launch delay to at least July 2023. Its future remains uncertain.

In the next year, the James Webb Space Telescope will spend roughly 7% of its time focused not on distant galaxies, but on our own solar system. Here's a look at what it might see.

As a huge comet makes its closest approach to Earth on July 13, you might be curious why it's so hard to spot.

Comet C/2017 K2 (PANSTARRS), called K2 for short, is one of the farthest active comets ever spotted and will whizz by our planet on July 13.

A megacomet glows in the dark in this long-exposure image captured by an astrophotographer on June 18, before its closest approach to Earth.

NASA's James Webb Space Telescope has a blue-eyed special among its solar system observations.

Asteroid research and planetary defense is of great interest to scientists around the world, which is why June 30 marks international Asteroid Day.

NASA's Psyche asteroid mission is facing an uncertain future after software testing issues forced an extended launch delay expected to last at least until July 2023.