Author Question: Roughly how many stars are within 4 parsecs of the solar system? A) 3 B) 30 C) 3000 D) 300,000 ... (Read 18 times)

chandani · **on:** Jul 27, 2018

Roughly how many stars are within 4 parsecs of the solar system?

A) 3
B) 30
C) 3000
D) 300,000
E) 200 billion

Question 2

A solar mass star will evolve off the main sequence when:

A) it completely runs out of hydrogen.
B) it expels a planetary nebula to cool off and release radiation.
C) it explodes as a violent nova.
D) it builds up a core of inert helium.
E) it loses all its neutrinos, so fusion must cease.