Space on MSN5h
Mars was hot then cold then hot again. Could life have really survived there?
"It's been such a puzzle that there was liquid water on Mars, because Mars is further from the sun, and also, the sun was ...
Boeing replaces chief of its Starliner spacecraft unit
The vice president leading Boeing's Starliner spacecraft unit, Mark Nappi, has left the troubled program and was replaced by the company's International Space Station program manager, John Mulholland, ...