When a shell of hydrogen accretes onto a white dwarf from a close ...

[tnt_battle]

When a shell of hydrogen accretes onto a white dwarf from a close companion, a(n) ________ explosion violently blows off a fraction of a solar mass.
 
  Fill in the blank(s) with correct word

Question 2

Why did Tycho conclude that the Sun revolves around the Earth?
 
  A) He did not conclude that the Sun revolves around the Earth.
  B) He could not detect the parallax of stars expected if the Earth revolves around the Sun.
  C) He incorrectly measured the distance to the Sun and concluded it was in a low orbit around the Earth.
  D) Long-held tradition prevented him from even considering the idea.

[lin77x]

Answer to Question 1

nova

Answer to Question 2

B

[tnt_battle]

Thank you!

[lin77x]

Always glad to help...