Jared Isaacman, CEO of Shift4 Payments and an occasional commercial astronaut, has answered questions on his plans for the USA's space program during a confirmation hearing for the role of NASA chief. In the Senate Committee on Commerce, Science and Transportation, the 42-year-old billionaire was questioned on a wide range of topics, from the Artemis program to his significant ties with SpaceX CEO and Trump henchman Elon Musk. "Mr Isaacman, you have deep personal and financial ties to Elon Musk. You have invested tens of millions of dollars in SpaceX. You have paid millions of dollars to SpaceX for two...