Milky Way’s Central Black Hole Woke Up 200 Years Ago, NASA’s IXPE Finds

https://www.nasa.gov/mission_pages/ixpe/feature/milky-way-s-central-black-hole-woke-up-200-years-ago-nasa-s-ixpe-finds https://www.nasa.gov/mission_pages/chandra/multimedia/black-hole-SagittariusA.html