The Event Horizon Telescope (EHT) collaboration, has recently released a new view of the first-ever photographed black hole from 2019. Except this time they are showing how it looks in polarized light.

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Posted March 30, 2021

Using the South Pole Telescope (https://pole.uchicago.edu/public/Home.html), astronomers were able to measure, for the first time this close to the edge of a black hole, polarization - a signature of magnetic fields. Why does this matter? Light becomes polarized when going through certain filters. Understanding the polarization around the black hole can help astronomers sharpen their vision of the region around the black hole by looking at how the light originating there is polarized.

Learn more about this discovery and what it means at https://eventhorizontelescope.org/blog/astronomers-image-magnetic-fields-edge-m87s-black-hole