The worried reaction within space and national security agencies highlights the risks of government’s exclusive dependence on SpaceX for crucial tasks, including classified missions.

Elon Musk says that he's cutting off NASA's access to space, in a potentially devastating blow to the United States' space program.

"They've been under incredible stress for five months, give them a break," Errol Musk said while attending a forum by Putin's ultranationalist ally in Moscow.