Sagittarius A*, the 4.3-million-solar-mass black hole at the center of our Milky Way Galaxy, was observed with the Atacama Large Millimeter/submillimeter Array (ALMA) as a part of the Event Horizon Telescope (EHT) campaign in 2017. This artist’s illustration indicates where the modeling of the ALMA data predicts the hot spot to be and its orbit around Sagittarius A*. Image credit: ESO / M. Kornmesser / M. Wielgus / Event Horizon Collaboration. “We...