Tempel 1 and Hartley 2 Target Name:   Comet Hartley 2, Comet Tempel 1 Spacecraft:   Deep Impact (DIXI) Instrument:   Medium Resolution Instrument (MRI) Produced by:   NASA/JPL-Caltech/UMD Copyright:  NASA Copyright Free Policy Cross Reference:   PIA13629 Date Taken:   2010-11-04

• Cosmic Snow Storm During Comet Encounter
• Comet Hartley 2

This image shows the nuclei of comets Tempel 1 and Hartley 2, as imaged by NASA's Deep Impact spacecraft, which continued as an extended mission known as EPOXI.

Tempel 1 is five times larger than Hartley 2. Visible jets are easily seen in images of Hartley 2, but required extensive processing to be seen in images of Tempel 1.

Tempel 1 is 7.6 kilometers (4.7 miles) in the longest dimension. Hartley 2 is 2.2 km (1.4 miles) long.

The Tempel 1 image was built up from more than 25 images captured by the impactor targeting sensor on July 4, 2005. The Hartley 2 image was obtained by the Medium- Resolution Imager on Nov. 4, 2010.