NASA STEREO-A satellite's SECCHI/HI-2 camera captured this imagery of Comet C/2021 A1 (Leonard) Credit: Space.com | footage ...

The newly discovered interstellar visitor is just the third of its kind and fascinates astronomers who hope to learn from it ...

A comet the size of Manhattan has been detected hurtling through the solar system, marking only the third time an ...

Astronomers are tracking a newly spotted comet hailing from parts unknown, only the third time such an interstellar object ...

Solar systems mostly keep to themselves. What’s ours is ours and what’s not is not. Stars are simply too far from each ...

NASA has since confirmed the object is an interstellar comet called 3I/ATLAS – and it is only the third interstellar object ...

NASA has confirmed that a mysterious object hurtling towards us is an "interstellar object" that has entered the Solar System ...

The NASA-funded ATLAS (Asteroid Terrestrial-impact Last Alert System) telescope in Rio Hurtado first spotted the object ...

It’s officially the third known interstellar object to pass through our solar system and poses no threat to Earth.

Astronomers have discovered a rare instance of a interstellar comet speeding through the solar system. The 3I/ATLAS was first ...

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

NASA telescopes in Chile have discovered a comet from interstellar space, making its closest approach in October.