Comet Kohoutek, 25th December 1973.

False-colour picture of the comet Kohoutek, taken on the Skylab 4 mision to NASA's Skylab space station with a far ultra-violet camera. Discovered on 7th March, 1973 by Lubos Kohoutek, a Czech astronomer working at Hamburg Observatory, West Germany, Comet Kohoutek was visible with the naked eye from November 1973 until January 1974. Initially billed as being potentially the 'Comet of the Century', Kohoutek proved to be something of a disappointment to observers, being much dimmer than astronomers had predicted.