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

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 ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. While the scientific community has overwhelmingly concluded it's a comet, researchers wanted to find out for sure whether 3I/ATLAS ...

Harvard astrophysicist Avi Loeb has floated the provocative idea that humans might themselves be alien‑made 'autonomous probes,' built through advanced synthetic biology rather than evolving entirely ...

For generations, humans have imagined what it would be like to discover life beyond Earth. Would alien beings look anything ...

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.