Scientists have proposed that advanced alien civilizations could build a Dyson sphere around a black hole instead of a star.

Just hours after an Immigration and Customs Enforcement officer shot and killed an unarmed US citizen in Minneapolis on ...

Something appeared on the horizon: a feeling of dread, a lightness of breath, a rebounding ember from Phaethon’s chariot. The ...

"Star Trek" is social commentary as much as it is science fiction, bringing fans episodes that drive debate. These 10 classic ...