A mysterious visitor from another solar system could be an alien spacecraft, according to a leading Harvard astronomer.

You can watch comet 3I/ATLAS live online tonight (July 3), thanks to the Virtual Telescope Project, which will livestream ...

Interstellar object headed towards Mars, but poses no threat to Earth, says head of planetary defence at the ESA.

A mysterious cosmic traveler has found its way to the Solar System from the uncharted reaches of interstellar space. The rare ...

An object from another star has been seen entering the solar system at high speed, and is expected to whip around the sun in ...

Designated 3I/Atlas, this is likely the largest yet detected and has been classified as a comet, or cosmic snowball ...

Astronomers yesterday confirmed the discovery of an interstellar object racing through our Solar System — only the third ever ...

Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our Solar System – only the third ...

The interstellar object has been named 3I/Atlas by the International Astronomical Union’s Minor Planet Center.

NASA also points out that July and August is an excellent chance to view the constellation Aquila, also known as the eagle as ...

Astronomers are reporting the detection of a large object entering our solar system, and it is causing quite the stir in the ...