The interstellar object "3I/ATLAS," which flew into the solar system in 2025 and is now quietly moving away, has been the ...

3I/ATLAS is surrounded by “a complex jet structure,” new images show, sparking fresh speculation that the Manhattan-sized interstellar object could be an artificial alien craft. The images, captured ...

Scientists studying 3I Atlas detected strange and unexplained behavior that is beginning to raise serious questions among ...

Benevolent interloper or interstellar poison pill? With 3I/ATLAS set to fly by Earth in two weeks, Harvard professor Avi Loeb is debating whether our interstellar visitor is friend or foe — an answer ...

The earliest images of 3I/ATLAS, newly uncovered by Michigan State University, reveal how the interstellar object evolved as it traveled through our solar system—and how other distant solar systems ...

More than tenfold: That is the reported deuterium difference between water in interstellar comet 3I/ATLAS and water measured ...

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3I/ATLAS interstellar comet, first photographed from Mars orbit in October 2025, carries water ice with deuterium levels more than ten times higher than any solar system comet. The James Webb Space ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A deep image of interstellar Comet 3I/ATLAS captured by the ...

A catastrophic new claim has just ripped through the astronomical community, turning an already baffling celestial mystery into a potential global alarm. The interstellar object 3I/ATLAS, which has ...

A comet from another star system is due to make its closest—and final—approach to Earth this week before it continues on its journey back toward interstellar space. Interstellar Comet 3I/ATLAS will ...