Skywise Unlimited

The stars in the constellation Reticulum represent the tiny network of lines in a certain type of telescope eyepiece. They are engineered into a lens element and are akin to the cross-hairs in a rifle scope. In this case they are not only used for aiming, but also for measuring angular separations, and in modern […]

The significance of the “Copernican Revolution” is that as soon as you embrace the Sun as a star, you are immediately faced with the possibility that when you look out into space, someone or something is looking back. Before Copernicus most people thought the Earth was pretty much the whole Universe so the idea of […]