<a href="https://en.wikipedia.org/wiki/Discovery_of_cosmic_microwave_background_radiation" id="mwATc" rel="mw:WikiLink" title="Discovery of cosmic microwave background radiation">Discovery</a> of the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Cosmic_microwave_background_radiation" id="mwATg" rel="mw:WikiLink" title="Cosmic microwave background radiation">cosmic microwave background radiation</a> by <a href="https://en.wikipedia.org/wiki/Robert_Woodrow_Wilson" id="mwATk" rel="mw:WikiLink" title="Robert Woodrow Wilson">Robert Woodrow Wilson</a> and <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Arno_Penzias" id="mwATo" rel="mw:WikiLink" title="Arno Penzias">Arno Penzias</a>.