3.2 Finding the Monster
- There’s a thin layer of sodium atoms 90 km up in the atmosphere.
- Using lasers to create an artificial star in this layer of sodium atoms, Professor Ghez can calculate how to adjust the deformable mirror.
- The star is S0-2 orbits closest to the supermassive black hole at the center of the Milky Way. Studying S0-2 helps understand the curvature of spacetime.
- Using S0-2, Ghez was able to show that the 4E6 solar masses located at Sagittarius A* are in fact a supermassive black hole.