Option: Astrophysics Flashcards
1
Q
Olber’s paradox
A
If the universe were infinite and static, the night sky would be bright in all directions
2
Q
The universe seems to be made up of the same matter wherever we look, so it is…
A
Homogenous
3
Q
The universe is more or less the same in whichever direction we consider, so it is…
A
Isotropic
4
Q
The physical laws we observe in our region seem to apply throughout the universe, so they are…
A
Universal
5
Q
If a star is moving away from us, it will be…
A
Red shifted
6
Q
If a star is moving towards us, it will be
A
Blue shifted
7
Q
Resolution to Olber’s paradox
A
The number of stars is finite, so light from very distant stars hasn’t yet reached us
