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

A mysterious red jellyfish-like flashes, which were spotted in the sky, sparked rumours about aliens sending signals to our planet. People said that it “looked alien” as the flashes glowed brightly in ...

Far beyond the reach of any probe, astronomers have found a gas giant whose atmosphere behaves less like a familiar planet and more like a special effect from a big-budget space epic. Orbiting a ...