An interstellar comet carries water unlike anything in our solar system, revealing a far colder birthplace and clues about ...

The comet doesn't return for decades, but tonight is one of our two yearly reminders that it's out there!

Comet C/2025 R3 is putting on its final show as it passes close to the Sun before leaving the solar system forever.

Meteor showers, natural fireworks that streak brightly across the night sky, are one of them. The latest major meteor shower ...

The atmosphere is between 5 million and 10 million times thinner than Earth's atmosphere. A very small body, far from the sun ...

The Eta Aquarid meteor shower soon will light the sky with debris from Halley's comet. But a bright moon will spoil the fun this year, making the display harder to glimpse.

Comet C/2025 R3 (PanSTARRS) will make its closest approach to Earth on April 26 after surviving a near-Sun encounter that brightened it to naked-eye visibility under dark southern skies. NASA and ...

A meteor cluster reveals an asteroid disintegrating near the Sun. These observations help uncover hidden asteroids and ...

The finding offers fresh insight into our solar system’s farthest, coldest objects in a region known as the Kuiper Belt.

A comet born around another star is carrying water unlike anything ever measured in our solar system. Observations of comet ...