... Mars: Just The Fiction . ... Like a distant mirror of Earth dwellers' hopes and fears for the future, Mars, the fourth planet from the sun, has inspired profound works of fiction as well. Moonrise, Planet Earth . ... Saturn's Rings Seen Sideways . ... Saturn's rings are actually very thin. This picture from the Hubble Space Telescope was taken on August 6, 1995 when the rings lined up sideways as seen from Earth. ... Shells in the Egg Nebula . ... The Egg Nebula is taking a beating. ...