Trump gatecrashed a NASA press conference after SpaceX launched a $4.3 billion space telescope

SpaceX's Falcon Heavy is one of the most powerful rockets on the planet. Joel Kowsky/NASA via Getty Images President Donald Trump dialed in to a NASA press conference after the launch of a new space telescope. Trump called NASA chief Jared Isaacman and said the launch looked "beautiful on television." The Nancy Grace Roman telescope, which will study dark matter and energy, launched aboard a SpaceX rocket. Hours after a NASA mission to unravel the secrets of the universe blasted off on SpaceX's most powerful rocket, the agency's chief got a surprise call. President Donald Trump gatecrashed a NASA press conference after the agency successfully launched a $4.3 billion deep space telescope aboard a SpaceX rocket. The president called NASA administrator Jared Isaacman and addressed reporters and NASA staff to congratulate them on the launch of the Nancy Grace Roman space telescope.