PDS logoPlanetary Data System
PDS Information
Find a Node - Use these links to navigate to any of the 8 publicly accessible PDS Nodes.

This bar indicates that you are within the PDS enterprise which includes 6 science discipline nodes and 2 support nodes which are overseen by the Project Management Office at NASA's Goddard Space Flight Center (GSFC). Each node is led by an expert in the subject discipline, supported by an advisory group of other practitioners of that discipline, and subject to selection and approval under a regular NASA Research Announcement.
Click here to return to the Photojournal Home Page Click here to view a list of Photojournal Image Galleries Photojournal_inner_header
Latest Images  |  Spacecraft & Technology  |  Animations  |  Space Images App  |  Feedback  |  Photojournal Search  

PIA12204: Checking Tilt of Lightweight Test Rover
 Mission:  Mars Exploration Rover (MER)
 Spacecraft:  Spirit
 Product Size:  2258 x 1054 pixels (w x h)
 Produced By:  JPL
 Full-Res TIFF:  PIA12204.tif (7.148 MB)
 Full-Res JPEG:  PIA12204.jpg (232.8 kB)

Click on the image above to download a moderately sized image in JPEG format (possibly reduced in size from original)

Original Caption Released with Image:

Tests of possible maneuvers for use by NASA's rover Spirit on Mars include use of this lightweight test rover at NASA's Jet Propulsion Laboratory, Pasadena, Calif. In this scene from Sept. 8, 2009, rover team member Walter Hoffman is checking for a change in the vehicle's tilt after an arc-backwards maneuver.

This test rover, called the Surface System Testbed Lite, weighs about the same on Earth as Spirit does on Mars. Unlike the primary test rover in use at JPL, called the Surface System Testbed, the lighter model does not carry science instruments or a robotic arm. An object that weighs 10 pounds on Earth weighs just 3.8 pounds on Mars, due to the smaller mass of Mars compared to Earth.

Computer modeling using results from both test rovers and data from Mars is helping the rover team plot a strategy to try getting Spirit out of a patch of soft Martian soil where Spirit has been embedded for more than four months.

To see updates on the efforts to free the Spirit rover, visit the JPL Free Spirit website.

Image Credit:
NASA/JPL-Caltech

Image Addition Date:
2009-09-14