Comet Tempel 1


Comet discovered in 1867. It is not very bright, and cannot be seen by the naked eye. It is thought to be about 6km in diameter. The NASA Deep Impact probe created a 100m crater into the surface of the comet in July, 2005 in an attempt to study the interior composition of a comet. The NASA webpage http://www.nasa.gov/home/    has further information such as videos, photos and updates.