A Harvard University astrophysicist has sparked a furious debate by warning he cannot rule out that extraterrestrials are ...

Scientists warn humanity that the first contact with an alien civilisation may be loud, chaotic and extreme, potentially ...

All fiction is metaphor,” wrote Ursula K Le Guin. “Science fiction is metaphor.” The writer, most famous for her Earthsea fantasy novels, captured the civil rights movement, second-wave feminism and ...

With 3I/ATLAS days away from making its closest approach to Earth, agencies worldwide are conducting the largest and most ...

Department of Homeland Security (DHS) Secretary Kristi Noem receives a tour of the Terrorist Confinement Center CECOT with the Minister of Justice and Public Security Gustavo Villatoro in Tecoluca, El ...