I think he called them “nuclear goblins,” not dwarves. And they weren’t actual mythological creatures, just a silly nickname for “bodies of nuclear density” which floated around inside stars, and exploded when they got too far out from the core, causing solar flares.

The concept of moving the entire solar system is fascinating though. It was used in Larry Niven’s “known space” series of novels.

I mean, moving the whole solar system just makes sense at a certain level of energy expenditure - if you are already generating enough power to do interstellar travel, might as well take the whole house with you. Sucks if you live here and don't like the new travel direction of the system though, I guess. Find a new solar system to live in at that point?

Farnsworths ancestor?