JPL
Careers
Education
Science & Technology
JPL Logo
JPL Logo
Solar System
.

NASA's Deep Space Comet Hunter Mission Comes to an End

Sep 20, 2013
Artist's concept of NASA's Deep Impact spacecraft.
Credit: NASA/JPL-Caltech.

After almost 9 years in space that included the return of about 500,000 images, NASA's Deep Impact mission has ended.

PASADENA, Calif. - After almost 9 years in space that included an unprecedented July 4th impact and subsequent flyby of a comet, an additional comet flyby, and the return of approximately 500,000 images of celestial objects, NASA's Deep Impact mission has ended.

The project team at NASA's Jet Propulsion Laboratory in Pasadena, Calif., has reluctantly pronounced the mission at an end after being unable to communicate with the spacecraft for over a month. The last communication with the probe was Aug. 8. Deep Impact was history's most traveled comet research mission, going about 4.71 billion miles (7.58 billion kilometers).

"Deep Impact has been a fantastic, long-lasting spacecraft that has produced far more data than we had planned," said Mike A'Hearn, the Deep Impact principal investigator at the University of Maryland in College Park. "It has revolutionized our understanding of comets and their activity."

Deep Impact successfully completed its original bold mission of six months in 2005 to investigate both the surface and interior composition of a comet, and a subsequent extended mission of another comet flyby and observations of planets around other stars that lasted from July 2007 to December 2010. Since then, the spacecraft has been continually used as a space-borne planetary observatory to capture images and other scientific data on several targets of opportunity with its telescopes and instrumentation.

Launched in January 2005, the spacecraft first traveled about 268 million miles (431 million kilometers) to the vicinity of comet Tempel 1. On July 3, 2005, the spacecraft deployed an impactor into the path of comet to essentially be run over by its nucleus on July 4. This caused material from below the comet's surface to be blasted out into space where it could be examined by the telescopes and instrumentation of the flyby spacecraft. Sixteen days after that comet encounter, the Deep Impact team placed the spacecraft on a trajectory to fly back past Earth in late December 2007 to put it on course to encounter another comet, Hartley 2 in November 2010.

"Six months after launch, this spacecraft had already completed its planned mission to study comet Tempel 1," said Tim Larson, project manager of Deep Impact at JPL. "But the science team kept finding interesting things to do, and through the ingenuity of our mission team and navigators and support of NASA's Discovery Program, this spacecraft kept it up for more than eight years, producing amazing results all along the way."

The spacecraft's extended mission culminated in the successful flyby of comet Hartley 2 on Nov. 4, 2010. Along the way, it also observed six different stars to confirm the motion of planets orbiting them, and took images and data of Earth, the moon and Mars. These data helped to confirm the existence of water on the moon, and attempted to confirm the methane signature in the atmosphere of Mars. One sequence of images is a breathtaking view of the moon transiting across the face of Earth.

In January 2012, Deep Impact performed imaging and accessed the composition of distant comet C/2009 P1 (Garradd). It took images of comet ISON this year and collected early images of ISON in June.

After losing contact with the spacecraft last month, mission controllers spent several weeks trying to uplink commands to reactivate its onboard systems. Although the exact cause of the loss is not known, analysis has uncovered a potential problem with computer time tagging that could have led to loss of control for Deep Impact's orientation. That would then affect the positioning of its radio antennas, making communication difficult, as well as its solar arrays, which would in turn prevent the spacecraft from getting power and allow cold temperatures to ruin onboard equipment, essentially freezing its battery and propulsion systems.

"Despite this unexpected final curtain call, Deep Impact already achieved much more than ever was envisioned," said Lindley Johnson, the Discovery Program Executive at NASA Headquarters, and the Program Executive for the mission since a year before it launched. "Deep Impact has completely overturned what we thought we knew about comets and also provided a treasure trove of additional planetary science that will be the source data of research for years to come."

The mission is part of the Discovery Program managed at NASA's Marshall Space Flight Center in Huntsville, Ala. JPL manages the Deep Impact mission for NASA's Science Mission Directorate in Washington. Ball Aerospace & Technologies Corp. of Boulder, Colo., built the spacecraft. The California Institute of Technology in Pasadena manages JPL for NASA.

To find out more about Deep Impact's scientific results, visit:

http://www.jpl.nasa.gov/news/news.php?release=2013-286

For more information about Deep Impact, visit:

http://www.nasa.gov/deepimpact

NASA's Deep Impact Produced Deep Results

News Media Contact

DC Agle

Jet Propulsion Laboratory, Pasadena, Calif.

818-393-9011

agle@jpl.nasa.gov

Dwayne Brown

202-358-1726

dwayne.c.brown@nasa.gov

Lee Tune

301-405-4679

ltune@umd.edu

2013-287

Related News

Mars .

NASA’s Mars Helicopter to Make First Flight Attempt Sunday

Mars .

NASA’s Odyssey Orbiter Marks 20 Historic Years of Mapping Mars

Solar System .

Probing for Life in the Icy Crusts of Ocean Worlds

Mars .

NASA’s First Weather Report From Jezero Crater on Mars

Mars .

NASA Invites Public to Take Flight With Ingenuity Mars Helicopter

Mars .

NASA’s Mars Helicopter Survives First Cold Martian Night on Its Own

Mars .

Sensors Collect Crucial Data on Mars Landings With Arrival of Perseverance

Mars .

NASA’s InSight Detects Two Sizable Quakes on Mars

Solar System .

NASA’s Europa Clipper Builds Hardware, Moves Toward Assembly

Mars .

NASA’s Curiosity Mars Rover Takes Selfie With ‘Mont Mercou’

Explore More

Image .

Goldstone Radar Observations of Asteroid 2001 FO32

Video .

What's Up - April 2021

Image .

Europa Clipper Spacecraft (Illustration)

Image .

Europa Imaging System Wide Angle Camera

Image .

Faraday Cups Up Close: NASA's Europa Clipper

Image .

Europa Clipper's Thermal Tubing

Image .

Europa Imaging System Narrow Angle Camera

Image .

Europa Clipper REASON Testing on the Mesa

Image .

Europa Clipper's Europa Imaging System in the Works

Image .

Preparing NASA's Europa Clipper's Plasma Instrument

About JPL
Who We Are
Executive Council
Directors of JPL
JPL History
Documentary Series
Virtual Tour
Annual Reports
Missions
All
Current
Past
Future
News
All
Earth
Mars
Solar System
Universe
Technology
Galleries
Images
Videos
Audio
Podcasts
Infographics
Visions of the Future
Slice of History
Engage
JPL and the Community
Lecture Series
Public Tours
Events
Team Competitions
JPL Speakers Bureau
Topics
Solar System
Mars
Earth
Climate Change
Stars and Galaxies
Exoplanets
Technology
JPL Life
For Media
Contacts and Information
Press Kits
More
Asteroid Watch
Robotics at JPL
Subscribe to Newsletter
Universe Newsletter
Social Media
RSS
Get the Latest from JPL
Follow Us

JPL is a federally funded research and development center managed for NASA by Caltech.

More from JPL
Careers Education Science & Technology Acquisitions JPL Store
Careers
Education
Science & Technology
Acquisitions
JPL Store
Related NASA Sites
Basics of Spaceflight
Climate Kids
Earth / Global Climate Change
Exoplanet Exploration
Mars Exploration
Solar System Exploration
Space Place
NASA's Eyes Visualization Project
Voyager Interstellar Mission
NASA
Caltech
Privacy
Image Policy
FAQ
Feedback
Site Manager: Veronica McGregor
Site Editors: Tony Greicius, Randal Jackson, Naomi Hartono