Turns out this black void we live in is fairly large, and fairly 3D dimensional. Over a period of 10 years, astronomers led by the late, great John Huchra mapped the depths of the universe out to 380 million light years. Yeah, to Cleveland and back. It’s the largest, most complete map to date sportin’ the color codes to tell you just how far away that spec on the left really is. The 2MASS Redshift Survey (2MRS) map was presented last month and can now be seen it all of it’s 2-dimensional jpeg glory.
“A galaxy’s light is redshifted, or stretched to longer wavelengths, by the expansion of the universe. The farther the galaxy, the greater its redshift, so redshift measurements yield galaxy distances – the vital third dimension in a 3-D map.” CfA
Well, kind of a 3-D map anyway. Large res view of the galaxies below. If you’re in center of the universe, i.e. Chicago, this summer, you’ll be able to view an ultra high-definition, 8,000 x 8,000 pixel, image of the survey at the Adler Planetarium.