Gravitational lensing
a. occurs when light passes near a massive object and is deflected by the object's gravitational field.
b. can be used to determine the luminosity of a galaxy.
c. occurs when the mass of a galaxy is greater than expected from the luminosity of the galaxy.
d. occurs when the mass of a galaxy is less than expected from the luminosity of the galaxy.
e. can be used to determine the recessional velocity of a galaxy.
Question 2
Hydrostatic equilibrium refers to the balance between weight and pressure.
a. True
b. False
Indicate whether the statement is true or false
Much time and effort occurs between the development of a research idea and the statistical analysis
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