alt Hacker NewsWell, the mass of the Milky Way is very roughly 2 × 10^42 kg, and most of the matter is orbiting at 200,000 meters per second. My napkin says ~ 4e52 joules.
Well, the mass of the Milky Way is very roughly 2 × 10^42 kg, and most of the matter is orbiting at 200,000 meters per second. My napkin says ~ 4e52 joules.