Subscribe free to our newsletters via your
  Mars Exploration News  




Subscribe free to our newsletters via your




















Have Robot Have Map - Let's Go

This zoomed-in overhead view of the Mars Exploration Rover Spirit's estimated landing site and surrounding area shows the rover's potential "itinerary." Scientists and engineers plan to drive the rover approximately 250 meters (820 feet) from the green point to the rim of a nearby crater measuring 192 meters (630 feet) in diameter. They then plan to drive toward the east hills, the tops of which measure 2-3 kilometers (1-2 miles) away from the rover's estimated landing site. This image is a composite of images taken by the camera on Mars Global Surveyor and the descent image motion estimation system camera located on the bottom of the rover's lander.

Pasadena - Jan 19, 2004
Last week as NASA was only just beginning to pivot Spirit around for egress the science exploration and mapping teams were deciding their travel plans beyond the landing zone.

As has been widely reported the goal is to drive straight for the nearest crater rim and see what's there. After a good look there, the team has decided to head towards the hills to the south east of the landing site and see how far they can drive.

Determining exactly where the spacecraft landed, in the context of images taken from orbit, has given planners a useful map of the vicinity. After Spirit drives off its lander and examines nearby soil and rocks, the scientists and engineers managing it from NASA's Jet Propulsion Laboratory, Pasadena, Calif., intend to tell it to head for a crater that is about 250 meters (about 270 yards) northeast of the lander.

"We'll be careful as we approach. No one has ever driven up to a martian crater before," said Dr. Steve Squyres of Cornell University, Ithaca, N.Y., principal investigator for the science instruments on Spirit and on its twin Mars Exploration Rover, Opportunity.

The impact that dug the crater about 200 meters (about 220 yards) wide probably flung rocks from as deep as 20 to 30 meters (22 to 33 yards) onto the surrounding surface, where Spirit may find them and examine them. "It will provide a window into the subsurface of Mars," Squyres said.

Craters come in all sizes. The main scientific goal for Spirit is to determine whether the Connecticut-sized Gusev Crater ever contained a lake. Taking advantage of the nearby unnamed crater for access to buried deposits will add to what Spirit can learn from surface materials near the lander.

After that, if all goes well, the rover will head toward a range of hills about 3 kilometers (2 miles) away for a look at rocks that sit higher than the landing neighborhood's surface. That distance is about five times as far as NASA's mission-success criteria for how far either rover would drive. The highest hills in the group rise about 100 meters (110 yards) above the plain.

"I cannot tell you we're going to reach those hills," Squyres said. "We're going to go toward them.'' Getting closer would improve the detail resolved by Spirit's panoramic camera and by the infrared instrument used for identifying minerals from a distance.

First, though, comes drive-off. Overnight Monday to Tuesday, Spirit began rolling. It backed up 25 centimeters (10 inches), turned its wheels and pivoted 45 degrees.

"The engineering team is just elated that we're driving," said JPL's Chris Lewicki, flight director. "We've cut loose our ties and we're ready to rove." After two more pivots, for a total clockwise turn of 115 degrees, Spirit will be ready for driving onto the martian surface very early Thursday morning, according to latest plans.

Engineers and scientists have determined where on the martian surface the lander came to rest. NASA's Mars Odyssey orbiter was used in a technique similar to satellite-based global positioning systems on Earth to estimate the location of the landing site, said JPL's Joe Guinn of the rover mission's navigation team.

Other researchers correlated features seen on the horizon in Spirit's panoramic views with hills and craters identifiable in images taken by Mars Global Surveyor and Odyssey. "We've got a tremendous vista here with all kinds of features on the horizon," said JPL's Dr. Tim Parker, landing site-mapping geologist.

The spacecraft came to rest only about 250 to 300 meters (270 to 330 yards) southeast of its first impact. Transverse rockets successful slowed horizontal motion seconds before impact, said JPL's Rob Manning, who headed development of the entry, descent and landing system.

The spacecraft, encased in airbags, was just 8.5 meters (27.9 feet) off the ground when its bridle was cut for the final freefall to the surface. It first bounced about 8.4 meters (27.6 feet) high, then bounced 27 more times before stopping.

Analysis of Spirit's landing may aid in minor adjustments for Opportunity, on track for landing on the opposite side of Mars on Jan. 25 EST.

Community
Email This Article
Comment On This Article

Related Links
Mars at JPL
MERs at Cornell
SpaceDaily
Search SpaceDaily
Subscribe To SpaceDaily Express
Mars News and Information at MarsDaily.com
Lunar Dreams and more



Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News


Spirit Heading To 'Home Plate'
Pasadena CA (JPL) Jan 09, 2006
Last week Spirit completed robotic-arm work on "El Dorado." The rover used all three of its spectrometers plus the microscopic imager for readings over the New Year's weekend.









  • Boeing Selects Leader for Nuclear Space Systems Program
  • Boeing-Led Team to Study Nuclear-Powered Space Systems
  • Boeing To Build Space-borne Power Generator
  • New High-Purity Plutonium Sources Produced At Los Alamos

  • SMART-1 Set For Payload Commissioning
  • SMART-1 Finally Escapes the Radiation Belts
  • SMART-1 Chalks Up Another 2K On The Long Way To The Moon
  • Overall Status, Current Activities And Planned Activities

  • President Bush Announces New Vision for Space Exploration Program
  • NASA Announces New Headquarters Management Alignment
  • Where's The Beef
  • Plan 3 From Outer Space: The Bush Budget Switch

  • First Detection Of CO In Uranus
  • Pushing Out The Kuiper Belt
  • New Horizons Mission Team Plans Jupiter Encounter
  • Pluto Mission May Be Early Victim Of Growing Budget Crisis

  • Finding JIMO: Jupiter's Icy Moon Orbiter
  • Europa: Frozen Ocean in Motion
  • Io: A Moon On Fire
  • Thirty Four Orbits Later Galileo Checks Out By Jove



  • Saturn To Ring In The New Year
  • Cassini's Huygens Science Teams Begin Final Science Planning
  • Huygens Team Calibrates Science and Mission Plans
  • Titan's Lakes Of Hydrocarbons Makes For Daily Smog Alert

  • Chemists Crack Secrets Of Nature's Super Glue
  • Navy Enlists Microbes To Cut Costs
  • Delphi Unveils Mobile Satellite TV Antenna System at CES
  • New Light-Emitting Transistor Could Revolutionize Electronics Industry

  • The content herein, unless otherwise known to be public domain, are Copyright 1995-2006 - SpaceDaily.AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA PortalReports are copyright European Space Agency. All NASA sourced material is public domain. Additionalcopyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement