Cosmology Flashcards
1
Q
At what distance away from earth is the parallax method not effective?
A
Over 100 pc
2
Q
What are the three clauses of the cosmological principle?
A
The universe is homogeneous - the distribution of matter and energy is approximately constant
The universe is isotropic - The distribution of matter and energy is uniform in all directions
The laws of physics are universal
3
Q
On a Hertzbrung-Russel graph, what is on the axis?
A
Luminosity on the y axis
Temperature on the x axis, increasing to the left
