As Elon Musk and President Donald Trump trad jabs on their rival social media platforms, their feud has escalated beyond a public spat, threatening billions of dollars in federal contracts and throwing the future of America's space program into question.

With Trump threatening to sever government ties with Musk's businesses, most notably SpaceX , Newsweek looked at the web of contracts that bind the billionaire's ventures to the U.S. government.

Newsweek has reached out to SpaceX for comment via email on Friday.

Why It Matters

NASA and SpaceX have built one of the most significant public-private partnerships in modern space exploration. Since 2015, SpaceX has received more than $13 billion in NASA contracts, making it one of the agency's largest private partners.

SpaceX is

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