Elon Musk may have Covid-19, putting SpaceX's plan to launch astronauts this weekend into question

SpaceX CEO Elon Musk said on social media last night that he took four Covid-19 tests in one day, two of which were positive and two of which were negative. It's not yet clear if Musk has the virus, but the news immediately drummed up concern about whether a diagnosis will impact SpaceX's plans to launch astronauts on a mission to the International Space Station this weekend.