This is a retouched picture, which means that it has been digitally altered from its original version. The original can be viewed here: CMB Timeline75.jpg: .
The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2]
2010-08-17T09:17:21Z Plumbago 2400x1728 (538633 Bytes) Cropped image to remove surplus blackspace surrounding main image; moved "NASA / WMAP Science Team" caption accordingly; image otherwise unaltered
2006-11-09T16:21:52Z Kyle the hacker 3000x2159 (1076251 Bytes) bigger
2006-03-22T10:25:04Z ArséniureDeGallium 750x540 (95113 Bytes) Time Line of the Universe Credit: NASA/WMAP Science Team [http://map.gsfc.nasa.gov/m_ig/060915/CMB_Timeline75.jpg]