Multiple Choice
Our theories for the origin of spiral arms include each of the following EXCEPT ONE. Which is the EXCEPTION?
A) density waves
B) self-propagating star formation
C) the natural, gradual evolution from ellipticals into spirals
D) interactions between galaxies
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q15: The Hubble classification for a spiral galaxy
Q16: Large clouds of very hot gas that
Q17: If the recessional speed of a galaxy
Q18: How does the number of barred spirals
Q19: On the basis of the distance
Q21: All of the following systems are gravitationally
Q22: How many large spiral galaxies are there
Q23: What method is used to determine the
Q24: The Hubble classification for a galaxy having
Q25: Astronomers often speak of redshift z rather