As mass is transferred through the inner Lagrangian point in a binary system toward a white dwarf, the material forms a rapidly growing whirling disk of material known as a(n)

What is the Schwarzschild radius of a black hole?

Two stars have the same surface temperature. If star A has a larger luminosity than star B, then

Which of these items is roughly the same size as a neutron star?

What is the best current method for determining the masses of stars?

Based on their colors, which of the following stars is hottest?

Match the objects with the method astronomers would use to determine their distance.

A 3 Msun star will end its life as a

Because the celestial sphere is not real, it is not a good scientific model.

The ___________ of a gas is a measure of the average speed of the particles in the gas.