New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth ...

A striking optical illusion resembling a floating city or alien spacecraft was captured on camera above the countryside in ...

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents ...

Space: 1999 may have offered audiences a glimpse into the future, but its premise was rooted in the past — specifically, in a ...

New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth ...

A new exoplanet model screens rocky worlds by their ability to retain atmospheres over geologic timescales, helping narrow ...

Somewhere out there, a planet roughly the size of Earth may be orbiting a distant star in conditions that could support life. The problem is not finding the star.

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

A biologist specializing in invasive species has partnered with a former Pentagon strategist in pushing NASA to construct a ...

Scientists propose building a lab on the moon to screen Mars and other space samples for alien microbes before they ever ...

As much as Steven Spielberg likes aliens, he seems to prefer holding them at arm’s length. The creatures in Close Encounters ...

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