Consider the intriguing possibilities and potential dangers of encountering advanced alien civilizations that arrive on Earth ...

Imagine a future where humanity finds itself under the control of an alien civilization.

A novel way to find aliens might be through gravitational wave detection, Loeb says. He is interested in laser interferometry ...

The strongest yet indication of extraterrestrial life – in the form of organically produced chemicals, not an alien civilization – may have been found on a giant exoplanet 124 light-years from ...

The discovery of dimethyl sulfide on K2-18b, a planet 120 light-years away, has ignited hopes for extraterrestrial life due ...

Dyson spheres, the hypothetical mega-structures that advanced alien civilizations might use to enclose a star and harness its energy, suffer from a fatal flaw: They are catastrophically unstable.

Astronomers raised hopes that humanity might not be alone in the universe by announcing on Thursday they have detected the ...

NASA's Perseverance rover has revealed new clues about Mars' volcanic past. While most people searching for signs of alien ...

is almost certainly not surrounded by a structure built by a technologically advanced alien civilization. In reality, the star's odd dimming and brightening quality has a far more natural explanation.

So the odds that we will overlap in time and space with a detectable alien civilization don't seem great. There is probably no single solution to the Fermi Paradox The "great silence" is the idea ...