SpaceX founder Elon Musk pulled no punches in a testy exchange with European Space Agency astronaut Andreas Mogensen Thursday.
The pair are sparring over the circumstances of NASA astronauts Sunita Williams and Butch Wilmore’s extended stay on the orbiting laboratory. While the duo were only supposed to be on the International Space Station for a week starting last June, their trip was extended following issues with Boeing’s Starliner spacecraft.