The Hubble Space Telescope and the Jupiter Icy Moons Explorer have captured fresh images of an interstellar comet as the ...

The mysterious interstellar comet 3I/ATLAS is making its closest approach to Earth on Friday, offering scientists a rare ...

The interstellar comet 3I/ATLAS will make its closest approach to Earth on Friday, December 19, as it continues to hurtle ...

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will soon come as close to our planet as it ever will.

Oceans hiding within the crusts of distant moons are tantalizing targets for scientists looking for life beyond Earth ...

The comet's approach marks only the third known time an object from outside the Milky Way has passed through our solar system.

The comet will come much closer to Jupiter in March, zipping within 33 million miles (53 million kilometers). It will be the mid-2030s before it reaches interstellar space, never to return, said Paul ...

A distant world with carbon in its atmosphere and extraordinarily high temperatures is unlike any other planet we’ve seen, and it’s unclear how it could have formed ...

It's only the third object in history from outside our solar system to be discovered cruising through our area of space.

Astronomers have captured a rare and remarkably close view of a giant planet circling a pair of tightly bound suns, offering ...

The interstellar comet 3I/ATLAS is just days away from coming as close to Earth as it will ever get. Here's how you can track it and spot it.

This week, Earth will get its best chance to steady an interstellar comet as it makes its closest approach to the planet.