astrophysics and cosmology Flashcards
1
Q
A
2
Q
A
3
Q
A
Sign of gravitational energy is negative
4
Q
A
5
Q
Define the Doppler effect
A
Observed frequency is different to source frequency when source moves relative to observer
6
Q
Define stellar parallax
A
Apparent motion or displacement of a star relative to the background of more distant stars
7
Q
A
8
Q
A
