This is an image of comet Halley. Comet Halley takes about 76 years to orbit the sun once.
Comet Halley was discovered in 1705 by Edmund Halley. Edmund Halley predicted the orbit of the comet through past observations of comets, suggesting that these sightings were in fact all the same comet. Comet Halley is perhaps the most famous comet -- it has been sighted for millennia. Comet Halley is also featured in the Bayeux tapestry, which chronicles the Battle of Hastings in 1066.
Credit: ESA/Max-Planck-Institute for Solar System Research