NASA accidentally broadcast a simulation of astronauts being treated for decompression sickness on the International Space Station (ISS) on Wednesday, prompting speculation of an emergency in posts on ...

Imagine if scientists discovered a giant asteroid with a 72% chance of hitting the Earth in about 14 years — a space rock so big that it could not only take out a city but devastate a whole region.

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NASA conducted a new tabletop simulation of discovering a large asteroid headed for Earth. Experts feared Congress wouldn't fund a mission to an asteroid with a 72% chance of impacting Earth. This ...

Add Yahoo as a preferred source to see more of our stories on Google. FILE PHOTO: A satellite image shows an overview of the International Space Station with the Boeing Starliner spacecraft SINGAPORE ...