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 amid news that the U.S. space agency 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 . The insults came after Duffy made a series of public appearances to proclaim NASA's intention of r

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