Because every earthly comparison keeps failing, you've got to go celestial when searching for metaphors to explain this year's Golden State Warriors.
Supernovas, solar flares, shooting stars—things like that.
Even then the parallel isn't perfect. Because cosmically those phenomena are temporary events. They explode or burn out eventually; last gasps of dying things played out over millennia.
These Warriors won't be around for thousands of years, but they could sustain this championship-caliber dominance for another five or six—which, in NBA terms, is pretty much the same thing.
That's because Golden State's most critical components are locked up long term (or almost certainly will be in the case of Stephen Curry), and its supporting roster is loaded with transitional pieces ready to assume bigger roles when some of the aging ones move on or decline.