File:PIA02142 annotated.jpg

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Description

This image shows comet Tempel 1 before Deep Impact's probe smashed into its surface. It is a composite of images taken by the probe's impactor targeting sensor. The Sun is to the right of the image and reveals terrain varying in brightness by a factor of two. Shadows and bright areas indicate surface topography. Smooth regions with no features (lower left and upper right) are probably younger than rougher areas with circular features, which are probably impact craters. The probe crashed between the two dark-rimmed craters near the center and bottom of the comet.

This composite image was built up from scaling all images to 5 meters/pixel, and aligning images to fixed points. Each image at closer range, replaced equivalent locations observed at a greater distance. The impact site has the highest resolution because images were acquired until about 4 sec from impact or a few meters from the surface.

Arrows a and b point to large, smooth regions. The impact site is indicated by the third large arrow. Small arrows highlight a scarp that is bright due to illumination angle, which shows the smooth area to be elevated above the extremely rough terrain. The scale bar is 1 km and the two arrows above the nucleus point to the sun and the rotational axis of the nucleus. Celestial north is near the rotational pole.
Date
Source http://photojournal.jpl.nasa.gov/catalog/PIA02142
Author NASA / Jet Propulsion Laboratory / University of Maryland
Other versions File:PIA02142 Tempel 1 bottom sharped.jpg - unannotated version
This image or video was catalogued by Jet Propulsion Laboratory of the United States National Aeronautics and Space Administration (NASA) under Photo ID: PIA02142.

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Licensing

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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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Date/TimeThumbnailDimensionsUserComment
current17:52, 17 February 2011Thumbnail for version as of 17:52, 17 February 20111,290 × 1,620 (322 KB)WolfmanSF (talk | contribs){{Information |Description=This image shows comet Tempel 1 before Deep Impact's probe smashed into its surface. It is a composite of images taken by the probe's impactor targeting sensor. The Sun is to the right of the image and reveals terrain varying in

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