1801 French astronomer Jean-Louis Pons made his first comet discovery. In the next 27 years he discovered another 36 comets, more than any other person in history.
1892 Edward Emerson Barnard discovers D/1892 T1, the first comet discovered by photographic means, on the night of October 13–14.
1998 Launch of Deep Space 1 comet/asteroid mission
2003 Comet C/2002 V1 (NEAT) makes perihelion, seen by the Solar and Heliospheric Observatory.
2004 Stardust successfully flies past Comet Wild 2, collecting samples that are returned to Earth.
2005 The Deep Impact collider hits the comet Tempel 1.