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Hubble captures Deep Impact's comet collision HUBBLE EUROPEAN SPACE AGENCY INFORMATION CENTRE Posted: July 4, 2005 The NASA/ESA Hubble Space Telescope captured the dramatic effects of the collision early July 4 between a 370-kilogram projectile released by the Deep Impact spacecraft and comet 9P/Tempel 1.
In the middle image, captured 15 minutes after the collision, Tempel 1 appears four times brighter than in the pre-impact photo. Astronomers noticed that the inner cloud of dust and gas surrounding the comet's nucleus increased by about 200 kilometres in size. The impact caused a brilliant flash of light and a constant increase in the brightness of the inner cloud of dust and gas. The Hubble telescope continued to monitor the comet, snapping another image [at right] 62 minutes after the encounter. In this photo, the gas and dust ejected during the impact are expanding outward in the shape of a fan. The fan-shaped debris is travelling at about 1,800 kilometres an hour, or twice as fast as the speed of a commercial jet. The debris extends about 1,800 kilometres from the nucleus.
The visible-light images were taken by the Advanced Camera for Surveys' High Resolution Camera. The Hubble Space Telescope is a project of international cooperation between ESA and NASA.
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Deep Impact mission officials provide an engineering overview of the spacecraft's daring attempt to fire a small probe into Comet Tempel 1. This briefing occurred July 1 at JPL. (41min 04sec file)
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Scientists working on the Deep Impact mission give an update on research into Comet Tempel 1 and preview what they hope to learn with the July Fourth impact. This briefing occurred July 1 at JPL. (32min 29sec file)
A Boeing Delta 2 rocket blasts off from Cape Canaveral carrying NASA's comet-smashing probe called Deep Impact. This extended clip follows the mission through second stage ignition and jettison of the rocket's nose cone. (5min 37sec file)
On the eve of Deep Impact's launch, mission scientists hold a news conference at Kennedy Space Center to discuss the comet-smashing project. (35min 17sec file)
Rick Grammier, NASA's Deep Impact project manager from the Jet Propulsion Laboratory, provides a detailed overview of the spacecraft and its mission. (4min 54sec file)
Deep Impact principal investigator Michael A'Hearn explains how the comet collision will occur and what scientists hope to learn. (7min 11sec file)
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