Figure 22-8: R I V U X G
NGC 7331: A Near-Twin of the Milky Way If we could view our Galaxy from a great distance, it would probably look like this galaxy in the constellation Pegasus. As in Figure 22-6, the far-infrared image (a) reveals the presence of dust in the galaxy’s plane, while the near-infrared image (b) shows the distribution of stars. These images of NGC 7331, which is about 15 million pc (50 million ly) from Earth, were made with the Spitzer Space Telescope (see Section 6-7, especially Figure 6-26).
NGC 7331: A Near-Twin of the Milky Way If we could view our Galaxy from a great distance, it would probably look like this galaxy in the constellation Pegasus. As in Figure 22-6, the far-infrared image (a) reveals the presence of dust in the galaxy’s plane, while the near-infrared image (b) shows the distribution of stars. These images of NGC 7331, which is about 15 million pc (50 million ly) from Earth, were made with the Spitzer Space Telescope (see Section 6-7, especially Figure 6-26).
(NASA; JPL-Caltech; M. Regan [STScI]; and the SINGS Team)