Timeline after the big bang Flashcards
1
Q
What happened at T=0?
A
The big bang - singularity forms.
2
Q
What happened at T=10^-43?
A
Time and space form; space expands rapidly
3
Q
What happened at T=10^-34?
A
Universe cooled to 10^10 degrees Celsius
4
Q
What happened at T=10^-4?
A
Light matter forms - electrons positrons.
5
Q
What happened at T=10^-2?
A
Atomic nuclei form
6
Q
What happened at T=1?
A
Heavier matter forms - protons, neutrons
7
Q
What happened at T=5min
A
Universe cooled to 3000 degrees Celsius: first atoms form
8
Q
What happened at T=3x10^5 years?
A
First stars appear
9
Q
What happened at t=2x10^8 years?
A
Universe cools: reaches the size of the solar system
10
Q
What happened at T=1x10^9 years?
A
Galaxies begin to form.
