This new astronaut seems to have a very superhero background.

Congratulations! Dr. @JonnyYKim, former enlisted #NavySEAL member, math degree holder @uofsandiego, & @harvardmed alumnus, for becoming the 1st Korean-American @NASA astronaut to embark on assignments to the @Space_Station, Artemis missions to the Moon, and potentially Mars!
He should avoid strange ruins and cosmic rays.