There Are Hundreds of Mysterious Filaments at the Center of the Milky Way

Several million years ago, the core of our galaxy experienced a powerful event. It blew out a huge bi-lobed bubble that blasted through the interstellar medium in two directions. Whatever it was, it released huge amounts of energy from the central supermassive black hole, Sagittarius A* (Sgr A* for short). These bubbles contain weird, spindly …