cosmology

Question 1

What is the universe?

Answer 1

Large collection of billions of galaxies

Question 2

What is a galaxy?

Answer 2

A large collection of billions of stars

Question 3

What is a solar system?

Answer 3

A collection of planets orbiting a common star

Question 4

What does the Big Bang theory state?

Answer 4

That the universe expanded outwards from a single point

Question 5

What evidence supports the Big Bang theory?

Answer 5

Red shirt and cosmic microwave background radiation

Question 6

What does red shift show us?

Answer 6

The red shift of light from galaxies shows they’re all moving further away from us and the ones furthest away are moving the fastest

Question 7

What is CMBR?

Answer 7

just after the bug bang, lots of short wavelength radiation should have been released, over time as the universe expanded the radiation would’ve been stretched to become microwaves

Question 8

What is the Doppler effect?

Answer 8

Id a wave source is moving relative to an observer there will be a change in the observed frequency and wave length