Solitary Geyser in Yellowstone Park is anything but solitary this night. While it steams and erupts so does a large eruption from the Lion Group far below. Additionally 2 Perseid meteors flash across the vista
Tranquil The surface area of Saturn's moon Mimas is composed of water ice with only a small amount of rock. Yet Saturn's resonances with Mimas, and Mimas' resonances with other orbiting satellites are instrumental in the formation of Saturn's rings.