In the past decade, astronomers have witnessed three interstellar objects (ISOs) passing through the solar system. These ...

An interstellar comet spotted by NASA is headed for our solar system, showing up near Earth later this year, but it's another ...

Confirmed as an alien comet, new observations have given us a much better idea of how large this interstellar object actually ...

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

Interstellar object 3I/ATLAS — which is zooming through our inner solar system — appears to be emitting its own light, ...

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A mysterious interstellar comet named 3I/ATLAS is hurtling toward our solar system — and it's unlike anything we've seen ...

Avi Loeb, the Harvard theoretical physicist who has drawn attention for suggesting comet 3I/ATLAS may be alien-made, is sharing a new thought: The interstellar object could be nuclear-powered, based ...

Harvard astrophysicist Avi Loeb has cowritten a research paper speculating whether the comet 3I/ATLAS is in fact "hostile" ...

Scientists are exploring various proposals to repurpose existing spacecraft in order to chase after the interstellar object ...

NASA's Hubble Space Telescope got an up-close look at a headline-grabbing object known as 3I/ATLAS that has wandered into ...

An unidentified object originating outside the solar system is expected to travel past Earth in the coming months. The Guardian reports that the interstellar object is travelling towards the sun at a ...