1. Comet Impact: July 4, 2005 Impact Velocity: 23,000 mph Spacecraft Size: Flyby spacecraft - nearly as large as a Volkswagen Beetle automobile. Impactor spacecraft - about the same dimensions as a typical living room coffee table.

2. Principal Investigator, Dr. Michael A'Hearn and his science team want to find clues to the formation of the solar system and more about the structure and composition of comets by making a deep crater in Comet Tempel 1. The objectives for the mission are: 1.Observe how the crater forms 2.Measure the crater's depth and diameter 3.Measure the composition of the interior of the crater and its ejecta 4.Determine the changes in natural outgassing produced by the impact Science Objective

4. Deep Impact Quick Facts Mission/Instrument/Task Name: Deep Impact Objectives:To study the pristine interior of a comet by excavating a crater more than 25 m deep and 100 m in diameter. Start Date:11/01/1999 Launch Date:01/12/2005 Launch Vehicle:Delta II Launch Site:Eastern test range (Kennedy Space Center, Florida) Mission Events: (Rendezvous (distance)/ Landing (location)): Encounter date 0600 4 July 2005 UT Impactor separation at 24 hrs prior to impact Approach solar phase angle: 63° Impactor approach velocity: 10.2 km/s Flyby S/C closest approach: 500 km End of Mission: Data return until 08/2005 (28 days) End of Project Date:03/2006 (includes 9 months of data analysis) Launch Mass (kg):1020 kg

5. Launch Vehicle Flight System Flyby Spacecraft Impactor Instruments

6. An artist's rendition of the flyby spacecraft releasing the impactor, which will happen 24 hours before the collision Comet Tempel 1 The interactive Path Main Presentation

7. Crossword 1 Crossword 2 Crossword 3 Word search game 1 Word search game 2 Word search game 3 Brain Twister Other Brain Twisters

8. Fun facts Prepare model 1 Colour Page Prepare Model 2 Quiz Challenge Questions

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