The space agency has published its budget request to Congress which would see funding for science projects cut by nearly a half.

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.

Losing Elon Musk’s backing could threaten Donald Trump’s growing influence among tech donors, social media audiences, and younger male voters. For Mr. Musk, the break could intensify scrutiny of his business practices and government contracts.

The billionaire’s feud with the president over the nation’s debt is jeopardizing lucrative deals for SpaceX and other Musk companies.

"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.