Cosmic rays...

[Jer95]

Any way to simulate cosmic rays in orbiter? Lets say a DG4 is 50 AU away
it would say:
Warning: Cosmic Ray levels high!
1 minute later... no spacesuits...
Cosmic rays: Crew is dead!

 

[Urwumpe]

Yes, clearly. could be done in a plug-in with API for vessels that support crew health.

But your scenario is pretty unlikely, even strongest radiation outbursts of our own sun would not instantly kill the crew, but cause just a mild radiation sickness and eventually cancer.

And cosmic rays are very sparse powerful particles.