NASA crews are getting ready for its next moon mission. NASA shares an iconic image of carbon dioxide ice erupting in geysers when Martian winter turns to spring. General Atomics and NASA achieved an important milestone on the road to using nuclear-powered rockets by testing a new fuel and finding it can withstand extreme conditions.

Wearing the wrong shoe on Earth can lead to injury. Researchers still need to figure out the physical consequences of spending a long time walking around on the Moon.