Is the rest of the cosmos a pristine environment awaiting the arrival of humanity’s “post-human” descendants? Or is advanced ...

Billions of years ago, while the solar system was still young, a massive object may have drifted into it. It's not a spaceship, but it is an alien visitor in its own right—a colossal ...

Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...

Is alien invasion armageddon coming for us in November? That's the speculation set off by a legitimate academic study recently published by a team of scientists. In early July, a previously ...

A NASA‑linked study argues that alien probes could already be in our Solar System, but our surveys are still too crude to ...

Even at this early stage in our spacefaring age, humanity has already begun sending probes that will eventually reach other ...

The best way to find alien technosignatures is to look for ones that have long survived their creators, according to a new ...