... As the Moon orbits the Earth, the half illuminated by the Sun first becomes increasingly visible, then decreasingly visible. ... Inside the Eagle Nebula . ... La Silla Star Trails North and South . ... Fix your camera to a tripod and you can record graceful trails traced by the stars as planet Earth rotates on its axis. ... Red Aurora Over Australia . ... The Helix Nebula is one of brightest and closest examples of a planetary nebula, a gas cloud created at the end of the life of a Sun-like star. ...