The US space agency has outlined some of the most ... Also known as supermassive black holes, these cosmic monsters can be millions to billions of times more massive than our Sun.

Floating about in microgravity might seem like a blissful reprieve for the human body's weight-bearing skeleton, but when astronauts spend months in space, their bone density takes a serious hit that ...

retirement Why the Mission to Retrieve Astronauts Stuck in Space Is Delayed Again George Lucas' Axed ‘Star Wars' Series Cost ‘$40 Million an Episode' and ‘Would've Blown Up' the Franchise ...