Question

Ranking Task: The Size of Planets, Stars, and Stellar RemnantsPart A: Listed following are several astronomical objects. Rank these objects based on their diameter, from largest to smallest. (Note that the neutron star and black hole in this example have the same mass to make your comparison easier, but we generally expect black holes to have greater masses than neutron stars.)Part B: Listed following are several astronomical objects. Rank these objects based on their mass, from largest to smallest. (Be sure to notice that the main-sequence star here has a different spectral type from the one in Part A.)

Answer 1

Answer & Explanation:

Part A (based on diameter)

main-sequence star of a spectral type A

Jupiter

a one-solar-mass white dwarf

the Moon

a two-solar-mass neutron star

the event horizon of a two-solar-mass black hole

Part B (based on mass)

a typical black hole (formed in a supernova)

a typical neutron star

a one-solar-mass white dwarf

main-sequence of spectral type M

Jupiter

the Moon