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.

How old is the universe currently estimated to be?

• 20 billion years

• 30 billion years

• 14 billion years

• 10 billion years

What is the purpose of using scientific notation in astronomy?

• To make numbers look impressive

• To avoid using decimals

• To express large numbers

• To simplify calculations

Which era are we currently living in according to the five ages of the universe?

• Primordial Era

• Stelliferous Era

• Degenerate Era

• Black Hole Era

What will be the primary source of energy in the universe during the Degenerate Era?

• Brown dwarfs

• Black holes

• Stars

• White dwarfs

What is the predicted fate of black holes in the universe?

• They will remain unchanged

• They will merge into one supermassive black hole

• They will evaporate over time

• They will grow indefinitely

What is the significance of proton decay in the universe's future?

• It will lead to the disintegration of matter

• It will cause galaxies to merge

• It will create new stars

• It will stop the expansion of the universe

What is the 'Big Rip' hypothesis?

• The universe will remain static

• The universe will expand indefinitely

• The universe will collapse into a singularity

• The universe will be torn apart at a quantum level

What is one possible outcome of the universe's end according to speculative ideas?

• The universe will become a black hole

• The universe will restart as a new universe

• The universe will freeze in time

• The universe will become a multiverse

What happens to the universe during the Dark Era?

• It is devoid of significant energy sources

• It becomes filled with new stars

• It becomes a multiverse

• It is dominated by black holes

What is one hopeful idea about the universe's ultimate fate?

• The universe will become a black hole

• The universe will give birth to new universes

• The universe will collapse into a singularity

• The universe will remain static forever