 |
Explorations an Introduction to Astronomy Thomas T. Arny | ||||||||
|
|
Instructor
Resources |
||||||||
|
|||||||||
|
|||||||||||||||||||||||||
Chapter
Images
Chapter 16, Figure 20
Figure
16.20
False color
map of the radio emission at 21 centimeters from an ordinary spiral galaxy,
M51. Notice how clearly the radio intensity shows the spiral arms. (Courtesy
NRAO/AUI.)
