Time for another Fermi problem. There was a recent story in Science News that talked about the effects of the Chilean quakes on the Earth's rotation. The basic idea is that some ginmourmous amounts of ...
The fastest star in the Milky Way reaches 25,000 km/s and could reveal how the central black hole spins. Sagittarius A* (Sgr A*), the supermassive black hole at the center of the Milky Way, has a spin ...
Discover the latest articles and news in related subjects. Both MPM and RDS lead to spectral changes in the probe pulse. These two effects respond differently, however, to changes in the time delay of ...