How is an X-ray burst (in an X-ray binary system) similar to a nova?
A) Both involve explosions on the surface of stellar corpse.
B) Both typically recur every few hours to every few days.
C) Both are thought to involve fusion of hydrogen into helium.
D) Both result in the complete destruction of their host stars.
Question 2
All the planets orbit the Sun in the ________ plane.
Fill in the blank(s) with correct word