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Topic: Deep Impact (space mission)

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	05-022 (Deep Impact)
		Comet Tempel 1, source of NASA’s July 4 fireworks, is coated in a powdery layer of dust and bears evidence of other celestial collisions, according to first results from the Deep Impact mission published in Science and presented at the Division for Planetary Sciences meeting.
		Peter Schultz, professor of geological sciences at Brown University, was a co-investigator on the mission team.
		Deep Impact, managed by NASA’s Jet Propulsion Laboratory and the University of Maryland, aims to better understand how comets are built and what they’re made of.
	www.brown.edu /Administration/News_Bureau/2005-06/05-022.html (487 words)

	Deep Impact: Mission: Fact Sheet (Text Only) (Site not responding. Last check: 2007-10-14)
		Deep Impact, a NASA Discovery Mission, is the first space mission to probe beneath the surface of a comet and reveal the secrets of its interior.
		On impact, a crater is produced expected to range in size from that of a house to that of a football stadium, and two to fourteen stories deep.
		The Deep Impact mission is a partnership among the University of Maryland (UMD), the California Institute of Technology's Jet Propulsion Laboratory (JPL) and Ball Aerospace and Technology Corp. The scientific leadership of the mission is based at UMD.
	deepimpact.jpl.nasa.gov /mission/factsheet-text.html (991 words)

	Deep Impact (space mission) - Wikipedia, the free encyclopedia
		Deep Impact is a NASA space probe designed to study the composition of the interior of the comet Tempel 1.
		At 5:52 UTC on July 4, 2005, one section of the Deep Impact probe successfully impacted the comet's nucleus, excavating debris from the interior of the nucleus.
		The mission's Principal Investigator was Michael A'hearn, an astronomer at the University of Maryland.
	en.wikipedia.org /wiki/Deep_Impact_(space_mission) (2884 words)

	Space Today Online - Solar System - Comets - Deep Impact probe
		NASA's Deep Impact robot explorer arrived at the nucleus of Comet Tempel 1 as scheduled on July 4, 2005, and promptly blasted a hole in the face of that small fl body.
		Deep Impact was one of NASA's discovery mission spacecraft sent 83 million miles across the Solar System to explore the interior of the nucleus of the comet.
		Deep Impact waits five minutes as it passes debris in the comet tail, then turns to observe the departing comet for 24 hours.
	www.spacetoday.org /SolSys/Comets/DeepImpact.html (2428 words)

	Deep Impact (Site not responding. Last check: 2007-10-14)
		Deep Impact accomplished its remarkable goal of colliding with deep-space comet Tempel 1 and excavating material from the nucleus of the comet on the Fourth of July, 2005.
		Deep Impact implemented its mission with a Flyby spacecraft, which carried a High Resolution Instrument (HRI), a Medium Resolution Instrument (MRI), and a smart Impactor spacecraft, which carried the Impactor Targeting Sensor (ITS) instruments.
		NASA selected Deep Impact to be the eighth Discovery mission in July 1999 and was launched successfully at 1:47:08 p.m.
	www.ballaerospace.com /deepimpact.html (581 words)

	SPACE.com -- Deep Impact Special Report
		Deep impact confirms that comets aren't mostly ice, as was once thought.
		Deep Impact scientists and engineers are lauding their mission’s successful collision with Comet Tempel 1 and are already drawing some conclusions about the icy wanderer.
		NASA's first mission to purposely destroy a spacecraft in the name of science is poised to rocket skyward Wednesday, the start of the anticipated six-month Deep Impact mission to crash into a comet.
	www.space.com /deepimpact (1388 words)

	DISCOVERY ::: MISSIONS ::: Deep Impact
		The Deep Impact mission was the first experiment to probe beneath the surface of a comet, attempting to reveal never before seen materials that would provide clues to the internal composition and structure of a comet.
		Mission scientists found the first definitive evidence of water ice on the surface of a comet.
		Mission data indicate the nucleus is extremely porous, allowing the surface to heat up and cool down almost instantly in response to sunlight.
	discovery.nasa.gov /deepimpact.html (764 words)

	NASA - Deep Impact Kicks Off Fourth of July With Deep Space Fireworks
		The celestial collision and ensuing data collection by the nearby Deep Impact mothership was the climax of a very active 24 hour period for the mission which began with impactor release at 2:07 a.m.
		Deep space maneuvers by the flyby, final checkout of both spacecraft and comet imaging took up most of the next 22 hours.
		The goal of the Deep Impact mission is to provide a glimpse beneath the surface of a comet, where material from the solar system's formation remains relatively unchanged.
	www1.nasa.gov /mission_pages/deepimpact/media/deepimpact-070405-1.html (637 words)

	NSSDC Master Catalog Display: Spacecraft (Site not responding. Last check: 2007-10-14)
		The Deep Space 2 (DS2) project is a New Millenium mission consisting of two probes which were to penetrate the surface of Mars near the south polar layered terrain and send back data on the sub-surface properties.
		The mission was also planned to serve as a technology test for many of the components of the probes and a demonstration of passive atmospheric entry and survivable hard impact.
		Impact was expected to occur at 160 to 200 m/s with an angle of attack of less than 12 degrees.
	nssdc.gsfc.nasa.gov /database/MasterCatalog?sc=DEEPSP2 (1319 words)

	Deep (Site not responding. Last check: 2007-10-14)
		The Deep is a 1975 novel by John Crowley.
		Deep is an album by the British solo artist Peter Murphy in 1990.
		The Deep is a large underwater aquarium situated at the confluence of the Hull and Humber rivers in Hull.
	www.mcfly.org /Deep (80 words)

	Spaceflight Now \| Deep Impact \| Deep Impact is a smashing success
		On the eve of Deep Impact's launch, mission scientists hold a news conference at Kennedy Space Center to discuss the comet-smashing project.
		The crater that almost certainly resulted from the impact was not immediately visible in an obscuring cloud of debris that spread outward into deep space like some ghostly fog.
		And while it was not a primary goal of the mission, the deep space fireworks display will give scientists and engineers valuable insights into what might be needed someday to divert or destroy a comet on a collision course with Earth.
	www.spaceflightnow.com /deepimpact/050704postimpact.html (1988 words)

	science@nasa - Scientists/Engineers
		Deep Impact is the first space mission to probe beneath the surface of a comet and reveal the secrets of its interior.
		Upon impact, the crater produced is expected to range in size from that of a house to that of a football stadium, and two to fourteen stories deep.
		As this mission is an in-space experiment that no one knows the outcome of and represents real exploration, the E/PO program emphasizes team work, modeling and study of impact craters, and supporting ground-based observations.
	science.hq.nasa.gov /research/overviews/deep_impact.html (297 words)

	NASA - Deep Impact
		In all, Deep Impact should be able to peer into the new crater for almost 15 minutes before the craft speeds away, continuing, like its cometary quarry, to orbit forever around the Sun.
		Deep Impact is going to help planners understand exactly what materials comets contain and how difficult they might be to extract.
		At least one of the great extinctions of the past can be traced to the impact of a comet or an asteroid some 65 million years ago, resulting in the extinction of 70% of all species of life.
	science.nasa.gov /headlines/y2005/28jun_deepimpact.htm (1105 words)

	Deep Impact mission reveals comet's icy cargo - space - 02 February 2006 - New Scientist Space (Site not responding. Last check: 2007-10-14)
		Old assumptions about comets are faltering as results emerge from data collected by the Deep Impact spacecraft in July 2005, when the probe's impactor detached from the mother ship and crashed into the comet at 37,000 kilometres (23,000 miles) per hour.
		Deep Impact struck an ice-free surface area on Tempel 1, says Jessica Sunshine of Science Applications International Corporation in Chantilly, Virginia, US, who led the new study.
		But in analysing the ejecta from the comet after impact, she says, "one of the first things we saw was water ice".
	www.newscientistspace.com /article.ns?id=dn8670 (580 words)

	SPACE.com -- Deep Impact: Probing A Comet's Inner Secrets
		Slated for launch in December 2004, Deep Impact is a two-part hit-and-run mission.
		It is a NASA Discovery-class mission, the eighth in a series of low-cost, highly focused space science investigations.
		Deep Impact science team members are engaged in research to better determine exactly what they will encounter at Tempel 1.
	www.space.com /businesstechnology/technology/deep_impact_031125.html (1866 words)

	Wired News: NASA's 'Deep Impact' Mission
		Deep Impact is one of five proposals under consideration by the space agency.
		"Missions like Deep Impact may enable scientists to discover the origins of life or at least the materials that have gone to make up life and how they evolved in space," said Larry Lemke, chief of the advanced projects branch at NASA's Ames Research Center in Mountain View, California.
		Other mission proposals selected for evaluation by NASA are: sending a spacecraft to orbit Mercury, returning samples of the two small moons of Mars to Earth, studying the interior of Jupiter, and investigating the middle atmosphere of Venus.
	www.wired.com /news/technology/0,1282,16414,00.html (566 words)

	Definition of Deep Impact (space mission)
		Deep Impact is a NASA space probe, designed to study the composition of a cometary interior.
		The impact shall produce a 300ft crater, larger than the bowl of the Roman Colosseum.
		Deep Impact's state of health was uncertain during the first day after launch.
	www.wordiq.com /definition/Deep_Impact_(space_mission) (425 words)

	CNN.com - Day of the comet - Jun 30, 2005
		The target of Deep Impact is Tempel 1, a jet-fl, pickle-shaped icy dirt ball traveling at 6.3 miles per second.
		Among the program missions -- the Near Shoemaker mission that landed a spacecraft on asteroid Eros; the Mars Pathfinder mission; and the solar wind collection spacecraft Genesis, which crashed into the Earth when its parachutes failed to open on descent.
		Mission scientists hope to have the first images on the Deep Impact Web site within 20 minutes of the encounter.
	www.cnn.com /2005/TECH/space/06/30/deep.impact/index.html (1103 words)

	State has very deep impact on space work
		As NASA's Deep Impact space probe streaks toward a crashing comet rendezvous tonight, an Arizona university professor and Arizona scientist will be on the team that measures and evaluates the impact, and Arizona-manufactured equipment aboard will allow the probe to communicate with Earth.
		Deep Impact's main purpose is to better understand the composition of comets.
		And tonight, when the Deep Impact space probe should meet its crashing rendezvous with comet Tempel 1, team members monitoring the crash will include UA Professor Jay Melosh, an authority on comet cratering, and Michael Belton, president of Belton Space Exploration Initiatives in Tucson.
	www.azcentral.com /arizonarepublic/news/articles/0703azspace03.html (1826 words)

	NSSDC Master Catalog Display: Spacecraft (Site not responding. Last check: 2007-10-14)
		The goals of the Deep Impact mission were to rendezvous with comet 9P/Tempel 1 and launch a projectile into the comet nucleus.
		Deep Impact was 880,000 km from the comet on 3 July 2005 moving at a velocity of 10.2 km/s relative to the comet.
		At 600 seconds after impact the spacecraft was about 4000 km from the nucleus and observations of the crater began and continued up to a range of about 700 km, about 50 seconds before closest approach.
	nssdc.gsfc.nasa.gov /database/MasterCatalog?sc=2005-001A (1251 words)

	Wired News: Deep Impact Scores Bull's-Eye
		The unmanned probe of the Deep Impact mission collided with Tempel 1, a pickle-shaped comet half the size of Manhattan, late Sunday as thousands of people across the country fixed their eyes to the southwestern sky for a glimpse.
		The energy produced from the impact was equivalent to exploding five tons of dynamite and it caused the comet to shine six times brighter than normal.
		Deep Impact launched Jan. 12 from Cape Canaveral, Florida, on its 268 million-mile voyage.
	www.wired.com /news/space/0,2697,68085,00.html?tw=rss.TOP (923 words)

	NASA - Deep Impact Mission to a Comet
		The flyby spacecraft observes and records the impact, the ejected material blasted from the crater, and the structure and composition of the crater's interior.
		Deep Impact principal investigator Mike A'Hearn comments on the science goals of the mission.
		NASA's Deep Impact mission to begin a new era of comet exploration.
	www1.nasa.gov /mission_pages/deepimpact/mission (1142 words)

	Jet Propulsion Laboratory
		Stardust and Deep Impact have new assignments: re-visit the site of a previous smashing comet encounter, fly by another comet, and study extrasolar planets.
		These Hubble Space Telescope images of Vesta and Ceres show two of the most massive bodies in the asteroid belt, a region between Mars and Jupiter.
		Deep Impact's impactor was essentially "run over" by the nucleus of Tempel 1 in July 2005.
	www.jpl.nasa.gov /solar_system (382 words)

	SPACE.com -- Deep Impact’s Flyby Craft Ready For Course Correction Today (Site not responding. Last check: 2007-10-14)
		The two-part "crash and dash" Deep Impact spacecraft made use of a now-destroyed Impactor that collided with the city-sized Tempel 1, as well as a Flyby vehicle that monitoring the powerful collision from a distance.
		There are benefits to an extended mission proposal for Deep Impact, said Michael A’Hearn, an astronomer at the University of Maryland in College Park, Maryland.
		He is the principal investigator for the Deep Impact mission.
	dev.space.com /missionlaunches/050720_flyby_update.html (1036 words)

	Scientists marvel at comet collision - Space News - MSNBC.com (Site not responding. Last check: 2007-10-14)
		A space probe's direct hit on a comet millions of miles from Earth drew oohs and ahs on Monday from astronomers, who said the celestial fireworks show could continue for weeks.
		Hours after the Deep Impact mission’s refrigerator-sized Impactor probe collided with Comet Tempel 1, the Flyby mothership still spotted plumes of gas and dust flying out from the impact crater.
		At first, the autonomous Impactor was on a course that would miss the comet entirely, but it adjusted its trajectory to hit one of the brightest spots on the 3.7-mile-wide (6-kilometer-wide) comet while moving at a relative speed of 23,000 mph (37,000 kilometers per hour).
	www.msnbc.msn.com /id/8464385 (687 words)

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