A comparison of the sensitivity and resolution of WMAP with COBE and Penzias and Wilson's telescope, simulated data.
Diagram of the history of the Cosmic Microwave Background Radiation (CMBR), showing the improvement of CMBR resolution over the years. The CMBR, a faint microwave radiation permeating all space that can be detected by radio telescopes, is remnant radiation left from the Big Bang, and one of the few sources of information on conditions in the early universe.
By NASA - map.gsfc.nasa.gov/m ig/030644/030644.html, Public Domain, https://commons.wikimedia.org/w/index.php?curid=24942
By NASA -
map.gsfc.nasa.gov/m ig/030644/030644.html, Public Domain,
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