Jupiter Project #1: Jupiter Project by Gregory Benford

Turn Back! “Bohles!
This is Commander Aarons. Turn around! Radiation levels are increasing…”
“Meaning?”
“Meaning that in 33 minutes the Jovian magnetosphere is planning to turn your little Roadhog into a shower of luminous debris! And you along with it!”
“Forget it. I’m immortal.” Matt switched the radio off.