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Explorations an Introduction to Astronomy Thomas T. Arny | ||||||||
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Chapter
Images
Chapter 15, Figure 14
Figure
15.14
Dust limits
our view in the disk of the galaxy and creates the zone of avoidance. e see
no galaxies in the plane of our own galaxy because dust in the disk blocks
our view. (A) A plot showing how galaxies are distributed on the sky. Notice
how few lie along the central line (the galactic equator). This blank region
is the zone of avoidance. (Courtesy NOAO). (B) A sketch illustrating why we
see so few galaxies along the plane of the Milky
ay. The gray blobs represent dust clouds that block our view toward
directions that lie in the Milky ay's
plane. The galaxies are in reality about the same size as the Milky ay and
are, of course, much farther way than can properly be shown in the figure.
