In this artist’s impression, a comet erupts with jets of gas as it falls toward the sun from the depths of the outer solar system. There’s a giant ball of ice barreling through the solar system right ...

A colossal comet from another star is ripping through our solar system right now. Designated 3I/Atlas, this behemoth is up to 20 kilometers wide and traveling at a blistering 240,000 km/h on a one-way ...

3I/ATLAS, an interstellar object identified by NASA as a comet, recently passed its closest point to the sun. Scientists around the world are observing its months-long journey to learn more about the ...

There’s a giant ball of ice barreling through the solar system right now, and it’s bigger than any we’ve seen before. It poses no threat to Earth, but this comet, called C/2014 UN271 ...

Even as a brilliant, naked-eye comet slices through Earth's sky (cheers, Comet Lemmon!), the most famous object in the solar system right now is hidden on the far side of the sun: the interstellar ...

3I/ATLAS, only the third object from beyond our solar system ever spotted from Earth, was viewed from Mars by an orbiting European spacecraft. By Kenneth Chang Kenneth Chang reported on the first ...

Here’s what you’ll learn in this story: ⁠Extraterrestrial meteorites might be of interstellar origin for a few reasons. They may have unusual compositions, be crystals that formed earlier than our sun ...