Humanity has already sent five spacecraft on trajectories that will eventually carry them beyond the Solar System, ...

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

Alien probes could already be hiding somewhere in our Solar System – and our current surveys are nowhere near good enough to ...

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 interstellar body ...

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

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

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

Our search for technosignatures—clear signs of advanced civilizations beyond Earth—takes many forms. Many are driven by the famous Drake equation, which attempts to estimate how many technological ...

Scientists have searched one of the only known visitors to us from another solar system for signs of alien technology – and found nothing.

The SETI Institute is the latest to confirm what scientists have long suspected: the interstellar 3I/ATLAS comet is not an ...

The United States government’s recent release of hundreds of previously classified Unidentified Anomalous Phenomena (UAPs) ...