The Dragon splashed down on April 4 at 9:19 a.m. PDT off the coast of Oceanside, California, bringing SpaceX’s sixth private astronaut mission ... on social media site X during the flight.

There are effects of radiation in space; we get anywhere from 10 to 20 chest X-Rays equivalent to radiation every day in space and that has an effect on genetics. There was actually an experiment. My ...