Update: NASA has confirmed the object is an interstellar comet and says it has been officially named 3I/ATLAS.

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

Astrophysicist Josep Trigo-Rodriguez of the Institute of Space Sciences near Barcelona, Spain, believes it is an interstellar ...

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

Scientists believe that many more such objects regularly pass by the Earth, with a number of them flying relatively near to ...

Astronomers discovered that C/2014 UN271, a massive comet more than 10 times larger than any known comet, is emitting jets of ...

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

An object thought to have come from another star has been seen entering the solar system at high speed, and is expected to ...

A newly discovered object, dubbed A11pl3Z, appears to be moving too fast and straight to have originated in the solar system.

Comet Nishimura came into NASA's STEREO-A spacecraft's field of view. The solar wind was interacting with the tail of the comet in the footage. Credit: NASA/STEREO/Karl Battams | edited by Space.com's ...

The comet's approach toward Earth coincides with a total solar eclipse on April 8. Around that time, 12P/Pons-Brooks will be at or near perihelion, the point during orbit when it's closest to the sun.

Comet NEOWISE will be visible above the northwestern horizon in the Northern Hemisphere in the evenings this month. Once it disappears from view, the comet will not be visible in Earth’s skies ...