You are correct - nuclear powered. He loved the challenges of the various stations in the control center.
It was hard not to joke about the 'God Particle' in the same spirit as it was referred to. Sometimes it's difficult to know if a joke is appropriate when you don't know the people who are speaking together. I call my husband's T-shirts his 'T-shirt negligee' because he always wears his t-shirts under button-up shirts and almost never by themselves. Whatever his T-shirt says on it is our little secret! ;-)
That is awesome!