Debris released from the asteroid Dimorphos during NASA's DART mission has a higher momentum and less random distribution than expected, which "changes the physics we need to consider when planning ...

NASA estimates that astronauts on the ISS receive about 20 times more radiation than people on Earth. Over time, cumulative exposure can elevate the risk of cancers such as leukemia and solid tumors.

NASA has postponed the Axiom-4 mission to the ISS due to ongoing air leak investigations in the Russian segment, ... This prompted NASA to classify the issue as a top-level safety risk.