Multiple Choice
Most nearby stars move relative to the Sun at speeds below about 30 km/s. Suppose you observe a nearby star that is moving much faster than this (say, 300 km/s) . Which of the following is a likely explanation for its high speed?
A) It is a very high mass star.
B) It is a very young star, recently formed.
C) It is probably a halo star that is currently passing through the disk.
D) It has been pushed to high speed by the shock wave from a nearby supernova.
Correct Answer:
Verified
Correct Answer:
Verified
Q11: Why do stars in the disk of
Q12: Where do most dust grains form?<br>A)in molecular
Q13: Where does most star formation occur in
Q14: Which of the following does not accurately
Q15: What is the best evidence for an
Q18: Observing our galaxy at radio wavelengths allows
Q19: Which of the following properties is more
Q20: What is the most common form of
Q21: Over time, what is the net effect
Q42: Suppose you discovered a star made purely