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Article Images
Evidence for more dust than ice in comets
 
12 October 2005

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This image shows the initial ejecta that resulted when NASA's Deep Impact probe collided with Comet 9P/Tempel 1 at 07:52 CEST, 4 July 2005. It was taken by the spacecraft's high-resolution camera 13 seconds after impact. The image has been digitally processed to better show the comet's nucleus.

Credits: NASA/JPL-Caltech/UMD
 
 
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The Hubble Space Telescope was 120 million kilometres away from the comet when this image was taken by the high-resolution Advanced Camera for Surveys (ACS). The telescope's views complement close-up images being taken by cameras aboard Deep Impact, which is speeding toward the comet.

This image, snapped at 14:15 (UT/GMT) on 14 June, reveals the 'jet' (the bright fan-shaped area). The jet extends about 2200 kilometres, which is roughly the distance from Copenhagen to Athens. It is pointing in the direction of the Sun.

Credits: NASA, ESA, P. Feldman (Johns Hopkins University), and H. Weaver (Applied Physics Lab)

 


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