Musk's tirade came after Duffy announced NASA plans to reopen its moon landing contract with SpaceX, now worth $4.4 billion, to other bidders.

NASA had previously awarded the lucrative contract to SpaceX to develop its Starship megarocket to ferry Artemis III astronauts to the lunar surface before the decade is out.

Musk's insults also come amid a search for NASA's next long-term leader during Trump's second term. Billionaire Jared Isaacman has long been the SpaceX CEO's preferred candidate.

Elon Musk is taking aim at the head of NASA amid news that the U.S. space agency may consider companies other than SpaceX to build landers to transport astronauts to the moon's surface.

Musk, a billionaire and the world's richest man, took to social media site X to hurl personal attacks at NAS

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