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 ...

Astrophysicist Josep Trigo-Rodriguez, from the Institute of Space Sciences near Barcelona, Spain, believes it's an ...

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

A massive object from outside the solar system is passing through, but the world is not in danger. It is a rare visitor, ...

It currently sits around 420 million miles (or 670 million kilometres) from Earth. Astronomers have since confirmed its ...

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

Astronomers have discovered a new object that originated outside of our Solar System — only the third to be found.

It appears our solar system is getting more popular with out-of-towners. Astronomers have found a third interstellar object, ...

I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

Astronomers are scrambling to gather data on a mysterious object that’s currently hurtling through the solar system.

The European Space Agency (ESA) said it is monitoring an unidentified object alongside Russia identified only as A11pl3Z as it hurtles at astonishing speed from outside the Milky Way ...