Multiple Choice
The image below was probably taken in ____________ wavelengths because _______________________. 
A) radio; the disk probably contains many planets with intelligent life, who are beaming out radio and television signals into space
B) infrared; the central regions are bright, and cool stars in the bulges emit a lot of infrared light
C) visible; there is a lot dust in this galaxy that blocks light in a ring about halfway along the disk
D) ultraviolet; the light from hot young stars is mainly found along spiral arms
E) X-ray; the central nucleus is easily seen, and AGN emit a lot of X-rays
Correct Answer:

Verified
Correct Answer:
Verified
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