NASA Is Finally Sending a Hotel Magnate's Inflatable Habitat to the ISS

When humans leave Earth for good, they're going to need somewhere to stay. Something like a big bouncy castle for kids, but built to house astronauts and solar system colonists and tourists looking for an out-of-this-world vacation. It sounds like a sci-fi fever dream, but it's becoming reality. On Friday, SpaceX will launch a so-called "expandable"--a prototype called the Bigelow Expandable Activity Module--to the International Space Station. It will remain there, attached to the Tranquility module, for two years.