2) How big is a neutron star?

4) What happens when the gravity of a massive star is able to overcome neutron degeneracy pressure?

11) What powers active galactic nuclei, like quasars?

20) What is the diameter of the disk of the Milky Way?

7) What is Hubble’s Law?

2) How big is a neutron star?

4) What happens when the gravity of a massive star is able to overcome neutron degeneracy pressure?

11) What powers active galactic nuclei, like quasars?

7) What is Hubble’s Law?

20) What is the diameter of the disk of the Milky Way?