View Full Version : Discussion: Deep Impact Made a Bright Flash

2005-Jul-05, 03:24 PM
SUMMARY: When Deep Impact's impactor spacecraft smashed into Comet Tempel 1, the two objects collided at a speed of 10 km/s (6.3 miles/s). The force of this collision generated a tremendous amount of heat and light which served to illuminate the whole area for the Deep Impact flyby spacecraft. The impactor spacecraft was able to capture images of Tempel 1 as it approached, and the last image was taken at an altitude of only 30 km (19 miles).

View full article (http://www.universetoday.com/am/publish/deep_impact_flash.html)

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Don Alexander
2005-Jul-06, 10:30 AM
The caption of the picture is wrong - this was taken after the flyby craft passed the comet and shows sunlight lighting the ejecta cloud.

http://www.nasa.gov/mission_pages/deepimpa...a/pia02133.html (http://www.nasa.gov/mission_pages/deepimpact/multimedia/pia02133.html)

But there is a movie showing the impact and the accompanying flash, which saturated the detector and caused blooming.

http://www.nasa.gov/mission_pages/deepimpa...HRI-impact.html (http://www.nasa.gov/mission_pages/deepimpact/multimedia/070405-HRI-impact.html)

2005-Jul-06, 10:41 AM
Originally posted by Don Alexander@Jul 6 2005, 10:30 AM
The caption of the picture is wrong
Thanks Don Alexander,

I had noticed this too, but just shrugged it off. There was another moie from images by the other camera which I think showed the flash even better. I guess a single frame of the foash didn't look like a dramatic explosion. Hence the image choice for the article.