In recent years astronomers have found that the more massive a galaxy's central black hole, the more massive the galaxy's central bulge of stars seems to be. Now it turns out that for some galaxies, this isn't true. Is there a better way to judge the mass of a galaxy's black hole just by looking?
One of the most dramatic sights in the nighttime sky occurs when the Moon briefly hides a planet or star — an event called an occultation. On April 25th and 26th, many observers in northwestern North America will be treated to an unusual occultation double-header as the Moon conceals Saturn on one morning and Regulus the next. Both events should be visible without optical aid if the sky conditions are good.