Since you rock band types are utterly obsessed by what is "cool", how about:
Dark Energy
More suggestions:
Particle Horizon
Olber's Paradox
Scale Factor
My favourite:
The Friedmann-Lemaitre-Robertson-Walker Metric
Is the universe infinite? Well, according to the evidence, the answer is ... we don't know. And unfortunately, this may be the best answer we'll ever get. While the curvature of the universe is something that we might get a precise fix on (the data suggest a flat universe, i.e. no spatial...