A 62-page document written by President Donald Trump’s on-again-off-again pick to run NASA, billionaire Jared Isaacman, outlines a sweeping, ambitious, and at times controversial plan for the space agency.... The leak — according to a recent Ars Technica report and a source who confirmed the account to CNN — looked to have been part of an effort by Duffy, who is temporarily running NASA, to spur controversy and potentially thwart Isaacman’s renomination... A Mars shot and nuclear propulsion One eye-popping proposal in Project Athena is to set up a new Mars program, dubbed “Olympus.”...The document also includes numerous mentions of...