Mesmerizing new images of the supermassive black hole at the heart of the Milky Way reveal a first look at the matter-gobbling behemoth’s magnetic field. The stunning snaps suggest that the cosmic void, named Sagittarius A* (Sgr A*), may be harboring hidden jets that are shooting superheated matter into our galaxy.
The new images were captured by the Event Horizon Telescope (EHT), an array of radio observatories around the globe that act as a single telescope, which captured the first-ever direct photo of Sgr A* back in 2022. Unlike previous images of the black hole, which is located around 27,000 light-years from the sun, the new shots were taken using polarized light. This type of light is made up of waves that vibrate in a single plane; the human eye cannot distinguish it from other light, but it can be picked up by radio telescopes.
Matter swirling around a black hole’s event horizon — the point beyond which nothing, not even light, can escape the black hole’s gravitational pull — emits a lot of polarized light, making it stand out in the new photos. This matter is mainly aligned along magnetic-field lines. As a result, scientists can use the new images as a de facto map of Sgr A*’s magnetic field, and they are surprised by how powerful it appears to be.
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