Dozens of NASA's spaceflight missions that launched from Florida could be in jeopardy under a budget proposal from the Trump administration.

NASA entrusts SpaceX with the lives of its astronauts, and the Pentagon relies heavily on the company to launch its most sensitive satellites.

As President Donald Trump and Elon Musk argued on social media on Thursday, the world's richest man threatened to decommission a space capsule used to take astronauts and supplies to the International Space Station.