Last month, an atlas of some 5 million images from the celestial map known as the Two Micron All-Sky Survey (2MASS) became available online (see http://www.ipac.caltech.edu/2mass/gallery/images_galaxies.html). It’s the most detailed high-resolution survey of the entire sky so far (SN: 2/23/02, p. 122: The Milky Way’s Middle).
