When a hunk of ice from another star system hurtles through our cosmic neighborhood, astronomers pay attention. When that same hunk of ice starts blasting out enough water to fill 70 Olympic swimming ...

On a single day last November, two spacecraft millions of kilometers apart turned their ultraviolet eyes toward the same alien comet and, between them, captured a view of its gas and dust that no ...

Add Yahoo as a preferred source to see more of our stories on Google. A deep image of interstellar Comet 3I/ATLAS captured by the Gemini Multi-Object Spectrograph (GMOS) on Gemini South at Cerro ...

A strange interstellar comet discovered last year and speculated by a prominent astronomer to be an alien spacecraft could be older than our Solar System, according to a new study. The comet, first ...

Less than a year ago, astronomers discovered a comet soaring through our sky that was not from our solar system. Although we still don't know where this interstellar object called 3I/ATLAS came from, ...

When the European Space Agency's ExoMars Trace Gas Orbiter pointed its surface-imaging camera deep into space on October 3, 2025 — the first time any spacecraft orbiting another planet had ever ...

When Comet 3I/ATLAS entered our solar system last year—only the third known interstellar object to do so—astronomers took notice. And so did scientists involved in the search for extraterrestrial ...

3I/ATLAS has made a reappearance. According to the New York Post , contrary to viral claims suggesting that 3I/ATLAS had vanished or was “no longer from Earth,” astronomers now say the Manhattan-sized ...

News that’s too incredible to be true travels fast. News reports are circulating that Rosetta’s Philae space probe that landed on comet 67p may be sitting on alien microbial life. The Guardian ...