Supermassive Black Hole A*, or simply A* (pronounced "A star"), tells stories of a human civilization at the center of the Milky Way galaxy: an area of space dominated by a gigantic black hole, where energy is abundant and life is cheap.
There really *is* a supermassive black hole at the center of our galaxy: Sagittarius A*, so named by scientific observers because it appears as the brightest part of a high energy radio source, denominated "A," located in the constellation Sagittarius when viewed from Earth. Sgr A*, the center of the Milky Way galaxy, about 26,000 light years from Earth, is roughly 4,000,000 times as massive as the Sun.
