A SpaceX spacecraft carrying four international astronauts is on a pioneering journey circling Earth over its poles after launching Monday night from Florida. Financed and led by cryptocurrency ...

A herd of elephants at the San Diego Zoo acted on instinct and formed an “alert circle” around their young to protect the calves against the earthquake that rattled Southern California on Monday, ...

A quartet of small, rocky exoplanets likely circle Barnard's Star, around 6 light-years from Earth, putting them in contention as targets of missions for future human generations.

A SpaceX spacecraft carrying four astronauts is on a pioneering journey circling Earth over its poles after launching Monday night from Florida.