The Hubble Space Telescope captured footage of Jupiter, Saturn, Uranus and Neptune in 2021. See them spin in this time-lapse.

From the cratered companion that lights Earth's night sky to the hundreds of icy worlds circling the Solar System's giant planets, moons are among the most fascinating objects in space. Over the past ...

At the right point of the orbit and stellar cycle, the star’s chromosphere brightens.

Evidence of the slowing of Charon's spin period (despinning) is recorded in tectonic features on the surface of Pluto's icy ...

A Jupiter-size exoplanet orbiting a dead star baffled astronomers. But the planet named WD 1856 b could preview the fate of ...

Researchers are closer to unraveling a longstanding solar mystery surrounding the extreme thinness of the sun's tachocline ...

Learn about the formation of the grains within many meteorites, emerging from collisions of planetary bodies in the early ...

Researchers probe the geochemistry of the moon, Mars, asteroids, and water worlds to understand our home and plan for future ...

On August 12, 2026, lucky viewers in and around Greenland, Iceland and Spain—weather allowing—will be able to see one of ...

A speculative paper argues that ancient planetary flybys may have helped trigger some of Earth’s mass extinctions.

Internal heat flows on exoplanets, one side of which is constantly facing the star, can create separate areas with moderate ...

A planet with one side permanently roasting and the other frozen in endless darkness might still have a chance of supporting life. Researchers found that heat inside a tidally locked exoplanet could ...