Have you ever gone outside on a beautiful night, looked up at the sky and wondered just how many stars that there were? Did you know that about eighty percent of the points of light you are seeing are actually Binary Star Systems… aka double stars? Unfortunately, to fully appreciate double stars, a telescope is required, but don’t despair! It doesn’t take the Hubble to see them; even a common set of binoculars can do the trick for many of these gems! So what is a double star… a Binary System? Well, commonly it is two or more stars in very close proximity to each other… Some double stars just happen to line up in the sky, and appear close together… even touching, but they are so far apart that their travels in the sky have no impact on each other. We call these Visual Doubles. Then we have the binary systems where there are actually two or more stars that are physically close to each other… enough so that they do have an impact on each other. We call these Gravitational Doubles. They circle one another, many times growing closer and closer to each other where over millennia that they may collide and result in super nova… […]
