Stars Pure Memorisation

Question 1

Evolution Big Bang
1)

Answer 1

At t=0 the universe is a singularity which is infinitely hot and dense

Question 2

Big Bang 2) inflation

Answer 2

Universe expands rapidly in a phase of accelrwtion called INFLATION.
- no matter yet, just all em radiating as gamma photons .

Question 3

Big Bang evolution
3)

Answer 3

First fundamental particles ( quarks and leptons) gain mass

(Mechanism not discovered yet, but involves Higgs boson)

Question 4

Big Bang evolution
4) hadrons

Answer 4

Quarks combine ti make hadrons such as protons and neutrons

Mass is made via pair production (forming anti particle particles)

Question 5

5) t = 1s

Answer 5

At around 1s, the creation of matter stops

Question 6

6) deuterium

Big banner evolution

Answer 6

At t= 100s

Protoms and neutrons fuse to become deuterium and helium nuclei , lithium and beryllium

Expansion sk rapid no more heavier nuckei are crested

Question 7

7) t = 380k years?

Answer 7

Universe cools enough for atoms to form, nuclei capture electrons and atoms formed

Now background radiation is microwave as universe cooled so much and gamma photons red shifted with expansion to form microwaves