Multiple Choice
The Crab Nebula is a nearby example of what type of physical phenomenon?
A) planetary nebula, a shell of gas leaving an old star
B) remnant of a supernova explosion
C) spiral galaxy, a collection of 100 billion stars
D) gas and dust cloud, the formation region for new stars
Correct Answer:
Verified
Correct Answer:
Verified
Q1: The structure of the deep interior of
Q2: Many possible explanations were offered when pulsars
Q4: The generation of magnetic fields requires both
Q5: From the start of collapse to the
Q6: Just before it exploded, the star that
Q7: What is it that keeps a white
Q8: A Type II supernova is the<br>A) collapse
Q9: The main source of moderate-energy cosmic rays,
Q10: The Crab Nebula is<br>A) a supernova remnant.<br>B)
Q11: What is a supernova impostor?<br>A) a massive