The Trump administration’s decision to shutter two offices at Nasa risks “dramatically” increasing the costs of space exploration, while handing Elon Musk more influence over the agency, fired workers have warned. Nasa’s office of technology, policy and strategy and office of the chief scientist provide independent analysis on key investments and strategies. Both are set to close, amid widespread cuts at the agency. Workers inside the two offices told the Guardian these cuts would undermine the ongoing goals of manned missions to the moon and Mars – and raise questions over conflicts of interest for Musk, who remains CEO of