Deep Time

The video explores the vast timeline of the universe, from its 14 billion-year history to its potential future. It discusses the five eras of the universe, including the stelliferous, degenerate, and black hole eras, and the eventual dark era. The video explains scientific notation for large numbers and considers the fate of stars, black holes, and the universe itself. It also explores speculative ideas like the Big Rip, multiverse, and cosmic reboot, offering a hopeful perspective on the universe's end.

What are the potential outcomes for the universe after the black hole era?

What is the significance of the cosmic horizon in the context of universal expansion?

How might the universe experience a 'cosmic reboot'?

In what ways could the universe's fate lead to the birth of new universes?