3I/ATLAS Interstellar Comet Found Rich in Methane but Dead Silent on Radio Signals: Somewhere between curiosity and cosmic awe lies the story of 3I/ATLAS — an interstellar comet that arrived from ...

A recent study has renewed discussion about whether advanced extraterrestrial civilisations could leave detectable ...

Even at this early stage in our spacefaring age, humanity has already begun sending probes that will eventually reach other solar systems, even if that was not their original intention. Five robotic ...

Sagan's team created the greatest puzzle of all time, which you can only solve if your species understands the basic nature ...

Add Yahoo as a preferred source to see more of our stories on Google. In July 2025, astronomers spotted a mysterious object screaming through the solar system from interstellar space. While the ...

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Astronomers studying the interstellar comet 3I/ATLAS say it could be a 12‑billion‑year‑old relic formed in near‑absolute‑zero conditions, while Nasa dismisses claims it is an alien probe.