PBS Space Time PBS Space Time

Could the Universe End by Tearing Apart Every Atom?

Sep 17, 2026 · 20m

Summary

This episode explores the potential "Big Rip" scenario where dark energy increases over time, tearing apart galaxies, stars, and atoms. The host explains the cosmological constant and equation of state parameters using the Friedmann equations, contrasting constant dark energy with phantom energy. Current data suggests dark energy is likely constant, leading to a heat death, though slight evidence hints at a possible Big Rip in 75 billion years. The discussion concludes with a journal club review of recent papers and a humorous tangent on dinosaur fossils.

Listen ad-free on Castria