The appearance of a naked eye comet is one of natures most impressive displays. Humans have regarded these suddenly appearing objects as everything from a sign of an upcoming disaster, to the bringers of water and organic materials to Earth. Not all comets are discovered with large telescopes and sophisticated electronic cameras. They sometimes sneak up on our planet by brightening suddenly. David Levy discovered 8 comets visually with small backyard telescopes. Perhaps, with persistence you too could discover a comet.