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 ...

Interstellar comet 3I/ATLAS was first spotted in our solar system in July 2025. Since its arrival, scientists have been confident it is a natural comet, but its rare interstellar origin made it an ...

The object, called 3I/ATLAS, is only the third interstellar visitor ever detected passing through our Solar System.

However, despite the theories, a fresh radio search has turned up no sign that the object, now named 3I/ATLAS, is emitting anything artificial, despite months of claims that the interstellar body ...

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.