Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 


Forgot your password?
Close
typodupeerror
×
Robotics Science

Spirit Marks One Martian Year 29

Posted by ScuttleMonkey from the peace-and-long-life dept.
hrayr writes to tell us NASA is reporting that Spirit, their proclaimed "wonder child", sent to explore Mars has just wrapped up its first Martian year, equivalent to two Earth years. Originally designed to only last 90 days the small six wheeled machine has lasted far beyond the original scope to bring us immense amounts of data and some 70,000 images. There is still great hope that this data, and more to come will bring us one step closer to Mars habitation.
This discussion has been archived. No new comments can be posted.

Spirit Marks One Martian Year More

Spirit Marks One Martian Year

Comments Filter:

  • Why Mars? (Score:2, Insightful)

    by n0dalus ( 807994 )
    More importantly, hopefully this data will bring us one step closer to habitating Earth effectively.

    • Re:Why Mars? (Score:4, Insightful)

      by Markus Registrada ( 642224 ) on Monday November 21, 2005 @07:05PM (#14086523)
      Yes. Jesus, what a dump. You wouldn't bid a nickel an acre for a place like that if it was right off a major freeway, and actually had air besides.

      Asteroids, particularly the ones (almost) sharing Earth's orbit, might be useful someday, and be worth visiting on that account. That is, if we don't blow ourselves up, or poison ourselves to death, or wipe out our biosphere first. There's nothing like starving in the dark with your hair and teeth falling out to make you lose interest in the finer points of space exploration.

  • Powered by... (Score:3, Interesting)

    by Anonymous Coward on Monday November 21, 2005 @06:44PM (#14086356)
    Linux :-) http://www.linuxjournal.com/article/7570 [linuxjournal.com]

  • Cool... (Score:3, Funny)

    by Mad_Rain ( 674268 ) on Monday November 21, 2005 @07:22PM (#14086634) Journal
    Now comes the cultural aspect of Spirit's research on Mars: Do the Martians bake it a birthday cake? Or do they now call it an adult and let it drive the family UFO?
  • ...equivalent to two Earth years...

    Should be 'roughly,' 'almost,' or 'close too, but not quite,' + equivalent...

    FTFA: "...has completed one martian year--that's almost two Earth years--on Mars."

  • Question: (Score:2, Insightful)

    by imstanny ( 722685 )
    Why would it only last 90 days? I dont have expertise in battery power, but I figured that since it has solar panels it can recharge its batteries. Having said that, I would imagine the battery would last longer than 90 days. So what's the dilly?

    • Re:Question: (Score:5, Informative)

      by xenocide2 ( 231786 ) on Monday November 21, 2005 @09:13PM (#14087369) Homepage
      Because its made of several parts intended for space grade usage and cost millions of dollars. Nobody wants to face owing the space research center their money back because their part failed first, so they set a number as a minimum. Clearly they aimed too low, although I've heard unfounded assertions that the 90 day target was because it was easier to budget the manpower that way.

    • Re:Question: (Score:3, Informative)

      by Mr2cents ( 323101 )
      It's just the warranty, or mission success criterium. If you look at the specs, there isn't a single part of the rovers with such a limited lifetime. For example, the batteries have a 1000 cycle lifetime. The big problem is that there were many unknowns. Landing on mars is a tricky business, two out of three missions failing. They sent two rovers to maximize the chance of at least one of them reaching the surface intact. Further bad luck (a global dust storm, or landing in the middle of a nasty dune field o

    • Re:Question: (Score:5, Informative)

      by surfdaddy ( 930829 ) on Monday November 21, 2005 @10:48PM (#14087762)
      Well, once you get through the tough problem of actually landing on the planet, you face a host of unknowns:

      - the temperature is extremely cold, and thermal stresses could crack electronic solder joints and/or ruin components

      - the batteries find it tough going at low temperatures

      - the silicon solar cells degrade over time, losing efficiency

      - an unknown amount of dust collects on the cells, how much and how long can you drive it? One of the surprises is that there are "dust devils" on Mars; some of these have actualy blown over the rovers and cleaned much dust off the solar cells! See the link for an amazing time-lapse movie of such winds caught by the rover cameras!

      http://www.nasa.gov/vision/universe/solarsystem/me r_main.html [nasa.gov]

      Bottom line: when you have thousands of parts in a harsh environment, you just don't know. They built them tough but light, and thought they had a good chance of exceeding 90 days. Thankfully, luck has been on JPL's side, and they're still going! What a success story.

      At almost the same time the rovers landed, a European probe was also to land. It was never heard from again, and presumably crashed.

    • Re:Question: (Score:3, Informative)

      by iamlucky13 ( 795185 )
      In addition to what other people have said: because the Sojourner rover lasted about 90 days before it collected too much dust and couldn't operate. It was only expected to last something like 2 weeks, at which time the batteries ran out and it had to trickle charge from it's undersized solar panel. I'm sure experience from the Viking missions and the Pathfinder lander was also used in setting the mission-success criteria.
      • The stupidest design element of Sojourner was that it didn't have rechargeable batteries. If it had, it might still be going as well.

    • Re:Question: (Score:3, Informative)

      by DerekLyons ( 302214 )

      Why would it only last 90 days? I dont have expertise in battery power, but I figured that since it has solar panels it can recharge its batteries. Having said that, I would imagine the battery would last longer than 90 days.,

      It's the solar panels that were expected to be the maint limiting factor. It was thought that they would get covered with dust and thus be unable to recharge the battery sufficiently as the insolation decreased during the Martian winter. This didn't happen.

  • Well done NASA (Score:2, Interesting)

    by Dr. Eggman ( 932300 )
    It is nice to see successes of NASA for a change. Hopefully, NASA's just in a slump now and we'll see more grand successes like the Mars rovers. First thing is first, lets bridge the shuttle gap with a Soyuz (spelling?) like craft for the purpose of moving materials and people to the space station so we can get that finished. Then, while thats happening they need keep working on designs for longer range reusable veichles like a hybrid between the Apollo setup and the shuttle so we can start working on reach

    • Re:Well done NASA (Score:4, Informative)

      by iamlucky13 ( 795185 ) on Tuesday November 22, 2005 @12:33AM (#14088171)
      Actually, NASA is hardly in a slump. They've shown a pretty good unmanned mission success over the last 4-5 years. The last major failure was the Mars Polar Lander, which was lost in 1999. Then of course there was the Genesis mission that failed to deploy it's parachute after successfully capturing solar wind particles. The sample was tainted, but not considered completely lost. In the meantime, they've launched the Spitzer, Cassini has arrived on station, Deep Impact smacked a comet, Voyager reached the termination shock, Galileo finished an excellent tour of Jupiter, Stardust is on it's way back to earth with a comet sample, Odyssey is orbiting Mars as planned, and the Reconnaissance Orbiter is halfway there. If you consider the past record, or even the trials of other nations (ESA losing the Beagle amd part of the data from Hguyens, Japan having trouble with Hayabusa and losing their Martian probe, Russia in the doldrums of a limited budget), the success rate lately has been outstanding. I hope this is a sign that we're finally getting the hang of it.
  • How, exactly, will data collected on Mars help us get to Mars? We know that:
    1. It's a long way off.
    2. There's not enough air.
    3. There's a whole bunch of not enough air between here and there
    4. Radiation and meteoroids are a problem.
    5. There are dust storms

    From the rover, we've learned that.... we can have a rover up there for a long time. And where some rocks are. Did I miss anything? I love the idea of going to Mars, but until we can send some very capable robots or humans to do more in-depth geological analysis

    • Re:Not to be a cynic (Score:3, Interesting)

      by exi1ed0ne ( 647852 )

      Aside from all the hard science things we've learned that may not be immediatly exploitable, we now know there is water. At an insane cost per pound to throw stuff out the gravity well, any resources you don't have to take with you reduce the mission scopr a lot. Think about it - extra fuel to boost the water, extra fuel to boost the extra fuel, ad nausium.

      I've read (too lazy to find a link) they've even figured out how to make fuel for the return flight from elements the atmosphere. That's some amazing

Slashdot Top Deals

"The medium is the message." -- Marshall McLuhan

Close