Astronomers have discovered yet another alien visitor to the Solar System.

We measure the extremely long distances between things in space by light years. A light year is the distance that light travels in one Earth year. Light travels at about 300,000 kilometres per second.

Astronomers have discovered yet another alien visitor to the Solar System. This one appears to be a comet, a ball of dust, ...

Astronomers have confirmed the third interstellar object on record is dashing through our solar system. Dubbed 3I/ATLAS, it ...

A fascinating glimpse into how a solar system like our own is born has been revealed with the detection of planet-forming ...

Based on the comet's brightness and current distance — it's located just inside Jupiter's orbit — scientists estimate its ...

PARIS, France - Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our Solar System -- ...

NASA has discovered the third known interstellar object to pass through our solar system, but the icy snowball object poses ...

All eyes are on Comet 3I/ATLAS as astronomers worldwide chase the exotic ice ball through our solar system ...

The object gained an official name, C/2025 N1 or 3I/ATLAS, on Wednesday. Moving at a record-setting speed for an interstellar ...

Jupiter isn’t alone in this category; Saturn, Uranus, and Neptune are also gas giants, though Uranus and Neptune are often ...

The solar wind pushes some of the gas and dust away from the comet, forming those beautiful tails we see. A comet actually ...