An object dubbed 3I/ATLAS is only the third interloper from outside the Solar System seen in all of human history.

A comet has entered the Solar System from interstellar space and will pass through the inner planets later this year, NASA ...

NASA has discovered a new interstellar comet that's currently located about 420 million miles away from Earth. The space ...

The comet should be visible by telescope through September, before it gets too close to the sun, and reappear in December on ...

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

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

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, ...

U.S. Sens. John Cornyn and Ted Cruz got language into President Donald Trump's "Big, Beautiful Bill" that creates a path for ...

The second half of the 19th century was a particularly interesting time to imagine Mars. This was a period during which the ...

One summer night in 1877, American astronomer Asaph Hall was looking through his telescope in Washington, D.C. Mars was at ...

In this week’s episode of Space Minds David Ariosto sits down Nathalie Cabrol, Director of the Carl Sagan Center at the SETI ...