Even by the strange standards of interstellar visitors, 3I/ATLAS is turning into a real cosmic outlier. Discovered on July 1, 2025 by the ATLAS telescope in Chile, this Manhattan-sized interloper — ...

When astronomers first spotted the fast-moving object 3I/ATLAS hurtling through the solar system in July 2025, speculation erupted online: was it another ʻOumuamua—or even an alien craft? Months of ...

Those concerned that 3I/ATLAS' arrival to our solar system meant that some sort of alien invasion was imminent can breathe a sigh of relief. And they have the evidence to prove it. To be clear, the ...

The NASA/ESA Hubble Space Telescope reobserved interstellar comet 3I/ATLAS on 30 November with its Wide Field Camera 3 instrument. At the time, the comet was about 286 million kilometers from Earth.

When some scientists and conspiracy theorists saw the strange trajectory of the space object 3I/ATLAS, some of them thought one thing: aliens. With a bizarre shape, an unusually precise trajectory, ...

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 ...