Hubble shows signs that the moon is spitting water from a subsurface ocean, raising excitement for a planned mission to the frozen world.
The charismatic founder of SpaceX is presenting his Mars vision to aerospace experts. Here’s how to watch live—and what you need to know.
Archaeologists recently dug up a long-buried capsule underneath a former Nazi training facility.
Dramatic footage shows life trying to find a way during a brutal battle.
An animal-welfare organization reflects on its nerve-wracking rescue—and what it might means for hundreds of other troubled zoos around the world.
Animal News From National Geographic