Tech billionaire Elon Musk took a swing at acting NASA Administrator Sean Duffy on Tuesday, calling him “Sean Dummy” and saying he “is trying to kill NASA!”

Musk was replying to a post on the social platform X which described Wall Street Journal reporting about the Transportation secretary's plans for NASA, which he is leading in a temporary capacity.

The Journal reported Monday there has been recent turmoil surrounding the leadership of NASA. Duffy has expressed interest in heading up NASA, sources told the outlet. Tech entrepreneur Jared Isaacman, who had his nomination to be NASA's administrator withdrawn by President Trump earlier this year, has also expressed interest.

Advisers and lawmakers backing both Duffy and Isaacman reached out to Trump and members of his administration last

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