NASA's planet-hunting TESS telescope observed the rare interstellar comet 3I/ATLAS two months before it was formally "discovered," and those early observations reveal the comet is surprisingly active.

Scientists working with the James Webb telescope, the largest telescope in space, have spotted what’s believed to be an incredibly rare interstellar sight. This is the first time an interstellar comet ...

Using near-infrared technology, the comet's physical properties can be deciphered based on the light it emits.

Scientists are trying to learn as much as they can about our third ever discovered interstellar visitor, 3I/Atlas, as it ...

NASA and the European Space Agency recently shared remarkable new images of the interstellar comet 3I/ATLAS, which was ...

NASA’s Hubble Space Telescope has captured the sharpest-ever view of the interstellar comet 3I/ATLAS, revealing clues about its icy nucleus, high-speed journey, and dust activity as it races through ...

Astronomers have spotted only three objects known to have come from outside our solar system. The newest, called 3I/ATLAS, is ...

Called 3I/ATLAS, the comet is only the third of its kind known to astronomers, and it’s likely been heading our way for billions of years, carrying pristine material from another star system ...

A rare celestial event is about to unfold as Comet C/2025 A6 (Lemmon) hurtles toward Earth. The comet was first spotted on ...

A RARE “black moon” linked to the biblical prophecy of the “end times” is expected to show up in the night sky over the ...