Image of the Week: Milky Way Spiral Milky Way dust emission as measured from the Planck satellite and converted into a polarization pattern of B-modes, a spiral type of polarization imprinted in the microwave sky. —Uroš Seljak, University of California, Berkeley, USA, Winner Wiki Science Competition 2019; CC-BY-4.0 *Link in Bio #Milkyway #emission #satellite #polarization #microwave #sky