A solar-mass star will evolve off the main sequence when A) it ...

[laurencescou]

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

Question 2

The next moon likely to be broken up into a ring is
 
  A) Triton. B) Mimas. C) Io. D) Ganymede. E) Charon.

[macmac]

Answer to Question 1

C

Answer to Question 2

A

[laurencescou]

Thanks for the timely response, appreciate it

[vickybb89]

YES! Correct, THANKS for helping me on my review