For a more recent data point, how about NASA’s safety requirements for SpaceX manned flights, circa 2020?
Josh Finch, a NASA spokesperson, told Spaceflight Now that the agency’s calculated “Loss Of Crew” probability for SpaceX’s Demo-2 test flight is 1-in-276, exceeding the commercial crew program’s requirement threshold of 1-in-270.
Would you get in a car if you had a 1 in 270 chance of dying during each trip? Those aren’t great odds for surviving a year’s worth of daily commutes.



For the sake of argument, let’s use your numbers and say an average astronaut ends up taking a dozen flights on rockets designed to NASA’s 1-in-270 “loss of crew” standard. If that probability holds, then we would expect 4.4% of all astronauts flying in modern rockets to be in a fatal accident during their 12-mission career.
For comparison, lifetime driving fatality risk for American drivers is right around 1%.