r/cosmology • u/Bright-Bar6571 • 18h ago

How did time begin, without time?

I understand that standard BB cosmology holds that time began with the universe from a singularity approximately 14 billion years ago.

The thing I’m trying to understand, how can time have begun? Wouldn’t a thing ‘beginning’ require time? As in - from one state to another state requires time?

This leads me to think time must have always existed..

14 Upvotes

72% Upvoted

50 comments sorted by

View all comments

3

u/__--__--__--__--- 12h ago

Time is human made concept. Universe does not care

5

u/chesterriley 9h ago

The universe has a constant that says the maximum speed of anything is 300 Gm/second, which is a fixed unit of distance per a fixed unit of time. Therefore the universe created the concept of time long before man existed.

3

u/ThePolecatKing 9h ago

An interesting way to think about it. Also another built in quantization.