= Cosmic Background Explorer
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= COBE
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The <Cosmic Background Explorer> connected two questions: does the <cosmic microwave background> follow a <Planck spectrum>, and how does its <temperature> vary across the sky? <John C. Mather> and <George F. Smoot> shared the 2006 <Nobel Prize in Physics> for these discoveries.<George F. Smoot – Facts by Nobel Prize Outreach>[2006 award and discovery summary]{ref} The <FIRAS> and <COBE DMR> comparisons below explain why measuring spectral shape and measuring angular structure require different information.
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