Sombrero Galaxy
What appears to be one gorgeous galaxy is actually two: A thin disk galaxy (in red), embedded within a large elliptical galaxy (in blue), about 28 million light-years away in the constellation Virgo. Infrared images from Spitzer revealed the Sombrero galaxy's hidden double nature; previously, astronomers thought it was just a flat and lonely disk galaxy.
Image: NASA/JPL-Caltech
