Multiple Choice
What is a planetary nebula?
A) a planet surrounded by a glowing shell of gas
B) the disk of gas and dust surrounding a young star that will soon form a star system
C) the ejected envelope of a giant star surrounding the remnant of a star
D) a type of young, medium-mass star
E) leftover gas from a supernova explosion
Correct Answer:
Verified
Correct Answer:
Verified
Q29: What is the escape velocity from the
Q30: The Sun eventually will become a<br>A) nova.<br>B)
Q31: Why is a star's time as a
Q32: When a star depletes its core supply
Q33: When a spectral-type G2 star like the
Q35: If a main-sequence star's core temperature increased,
Q36: Explain what the triple-alpha process is and
Q37: The largest low-mass stars have masses that
Q38: You observe a 0.8 M<sub>SUN </sub>white dwarf
Q39: Calculate the main-sequence lifetimes of the following