Thee Ring Circus

Many round craters are visible on this image as are three mountain ranges that seem to form partial arcs of different circles. The arrows point in the directions of these ranges, but why are they circular in form? It turns out that they are actually the outer rims of gigantic craters known as impact basins.Continue reading “Thee Ring Circus”

Moon, Up Close and Personal

Friends brought their children over last night for a lunar nerdfest and were rewarded with these views of the Moon. The upper image shows a curved mountain range crossing the middle portion. The crater Eratosthenes grazes the range at the middle of the image and to its lower left the magnificent crater Copernicus dominates theContinue reading “Moon, Up Close and Personal”