In this composite image of the merging cores of the Antennae Galaxies, optical (white and pink), radio (blue) and millimeter/submillimeter (orange and gold) images are combined to show the history and future of star formation. The optical image represents stars that are shining now. The radio image highlights gas that is probably too thin to become a star, and at the mm/submm wavelengths we can see the areas where new stars will likely form.
Credit: B. Saxton (NRAO/AUI/NSF) with data provided by ALMA (ESO/NAOJ/NAOJ) and NASA/ESA
Technical Details Telescope: VLA; VLA; ALMA; ALMA; VLA; ALMA Band: L; L; ALMA 7; ALMA 7; L; ALMA 6 Date: 1997-09-06; 1997-09-06; 2011-05-28T01:41:17.375999; 2011-05-28T03:06:05.087999; 1999-10-09; 2011-04-03T04:38:50.160000 Center: RA: 12:01:53.32, Dec: 18:03:29.58 Field of View: 3.3 x 3.3 arcminutes