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China Mars

NASA Mars Orbiter Reveals China's Zhurong Rover Has Not Moved For Months (spacenews.com) 45

Images from NASA's Mars Reconnaissance Orbiter reveal that China's Zhurong rover remains stationary on the Red Planet as China remains silent on the status of its spacecraft. SpaceNews reports: The High Resolution Imaging Science Experiment (HiRISE) camera aboard the Mars Reconnaissance Orbiter (MRO) captured images of the rover on March 11, 2022, a second on Sept. 8, 2022 and finally Feb. 7, 2023. The images were published Feb. 21 by the HiRISE Operations Center The images show that the solar-powered Zhurong -- which landed in May 2021 -- has not moved since at least September 2022. It had entered a planned hibernation state in May 2022 to ride out the low solar radiation levels of winter in Mars's Utopia Planitia region.

Zhurong was expected to autonomously resume activities around December, around the time of Spring solstice in the northern hemisphere, when temperatures and light levels reached levels allowing the rover's battery and solar arrays to generate sufficient electrical power. However Chinese space authorities have not provided an update on the status of the rover. The South China Morning Post reported Jan. 7, citing sources that do not wish to be named, that the mission team was yet to receive a signal from Zhurong.

The progression of the HiRISE images suggest that Zhurong may have accumulated a covering of Martian dust on its surface. This could impact the function of both its solar arrays and the pair of "windows" which allow a chemical called n-undecane to store heat energy during the day and release it during the night. Zhurong does not carry a radioisotope heater unit -- which are used by the country's Yutu lunar rovers -- instead using systems including n-undecane for heating and a coating of aerogel for insulation.

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NASA Mars Orbiter Reveals China's Zhurong Rover Has Not Moved For Months

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  • by Arethan ( 223197 ) on Wednesday February 22, 2023 @02:20AM (#63313653) Journal

    Still waiting for diag from tech support :)

    • by backslashdot ( 95548 ) on Wednesday February 22, 2023 @04:12AM (#63313765)

      India is sending its rover soon.

    • Still waiting for diag from tech support :)

      They must be on hold with India /s

  • Uh oh (Score:5, Funny)

    by DrMrLordX ( 559371 ) on Wednesday February 22, 2023 @02:43AM (#63313671)

    Something must have gone Zhurong!

  • It's those Terra Prime nutjobs - they must've hacked the rover!

  • by reanjr ( 588767 ) on Wednesday February 22, 2023 @02:58AM (#63313683) Homepage

    Imagine how epic it would be if we had a rover up there we could send over to give it a dusting and wake it up.

    • One of the problems with losing power with the NASA rovers was losing the heater which was required to keep the electronics from freezing. Once frozen the electronics were dead and would have to be replaced if the rover was to function again. I am not sure if the Chinese rover design would be similar but it would take a great deal of engineering to design electronics that could survive those low temperatures.
      • Getting electronics to work at that temperature (for values of "that" under about 400K / 120degC) isn't terribly difficult. The difficult bit is designing electronics that will survive 50+ K change between day and night - and that is a consequence of there being 0.6% of fuck-all atmosphere.

        In this respect, using a chemical-only heat-pipe mechanism is an interesting wrinkle. It may not have worked through this winter, but hopefully they've got enough diagnostic data from the rover before it died to workout

    • Imagine how epic it would be if people remembered that rover designers have been rejecting such solutions for over 20 years, because they don't think they'll work.

      Of course, if you're Elon Musk's secret Slashdot account, you could spend a few hundred megabucks of your own money to prove NASA wrong. Your money, your choice.

    • A fly over from Ingenuity perhaps?
      If it's dead... they may never know...

  • by sir1963nz ( 4560389 ) on Wednesday February 22, 2023 @03:04AM (#63313695)
    Fly a balloon over it to see if you can get a reaction that way ....
  • by fahrbot-bot ( 874524 ) on Wednesday February 22, 2023 @03:35AM (#63313725)

    It's resting -- tired and shagged out following a long squawk. Maybe pining for the fjords.

    (For you youngsters, Monty Python Dead Parrot [youtube.com])

    • by bobby ( 109046 )

      Mr. Praline: 'E's not pinin'! 'E's passed on! This parrot is no more! He has ceased to be! 'E's expired and gone to meet 'is maker! 'E's a stiff! Bereft of life, 'e rests in peace! If you hadn't nailed 'im to the perch 'e'd be pushing up the daisies! 'Is metabolic processes are now 'istory! 'E's off the twig! 'E's kicked the bucket, 'e's shuffled off 'is mortal coil, run down the curtain and joined the bleedin' choir invisible!! THIS IS AN EX-PARROT!!

      (pause)

      Owner: Well, I'd better replace it, then. (he takes a quick peek behind the counter) Sorry squire, I've had a look 'round the back of the shop, and uh, we're right out of parrots.

      Mr. Praline: I see. I see, I get the picture.

      Owner: (pause) I got a slug.

  • by poptopdrop ( 6713596 ) on Wednesday February 22, 2023 @03:45AM (#63313739)

    The specs looked good, but it conked out a week after the guarantee ran out, and I can't get anyone to come and repair it FFS.

  • about turn based games. Next time we should have a set time limit or you forfeit.

  • by bobby ( 109046 ) on Wednesday February 22, 2023 @05:00AM (#63313839)

    The faked capacitors all burst and leaked.

  • ...to Zhurong place.
  • May 22: My rover is broken, please look into it.
    Support: It has entered a planned hibernation period.
    September 22: My rover still doesn't move.
    Support: The hibernation period is not over yet, we contact you when the solar minimum is over.
    February 23: The minimum is over, what the hell is going on???
    Support: Sorry, your warranty period is over, have a nice day.

  • by coofercat ( 719737 ) on Wednesday February 22, 2023 @08:08AM (#63314099) Homepage Journal

    I don't see any "shame" in saying "after X days, our rover has developed a fault". I mean goodness sake, this is millions of miles away, and on another frikkin planet. I think you can be excused a few defects.

    I for one would respect China far more for admitting this than for staying silent. That perception affects how I receive any information from China - so even if they had made some awesome discovery on Mars, I'd still be waiting for NASA/ESA to verify it because China is so untrustworthy.

    • It would be a great deal of shame for China. They launched a rover that did not last very long compared to the US. Especially since they did it decades after the US so they were not pioneers in the field. "Hey, we gave it our best try." is not the most likely sentiment from Chinese engineers right now.
  • From wikipedia:

    Undecane (also known as hendecane) is a liquid alkane hydrocarbon with the chemical formula CH3(CH2)9CH3. It is used as a mild sex attractant for various types of moths and cockroaches, and an alert signal for a variety of ants.[3] It has 159 isomers.

    So obviously the Chinese rover has attracted horny hexapods who have covered the solar panels with egg masses and sex debris

  • Looks like they forgot to steal the part of the tech that lets them reliably control the device.
  • Chinese design breaks soon after first use, who could have expected?
  • The real story here is that China cannot allow itself to admit failure.

    Here is a real achievement that they've accomplished, putting a rover successfully on Mars. Problems and failures happen in that harsh environment. For the west, we use it as a learning experience. We run the data to find out what went wrong, so that it can be corrected for the future. But the Communist Chinese cannot allow anything close to "failure" or "setback" enter their vocabulary. That's why we haven't heard anything about it.

    That insecurity is going to cost them in the long run.
    • That's the confusing thing though. it's not a failure. The rover had a life expectancy of three months and survived for a year, completing all of it's objectives.

      If anything, not saying anything about the rover in fear of perceived failure hurts them more because people begin to forget about it vs announcing that the mission is officially over and tout the successes that it had.

      • by mackil ( 668039 )
        I couldn't agree more. It also adds to that "trust deficit" of anything China says or does, like @coofercat says in an above thread.

        I for one would respect China far more for admitting this than for staying silent. That perception affects how I receive any information from China - so even if they had made some awesome discovery on Mars, I'd still be waiting for NASA/ESA to verify it because China is so untrustworthy.

    • I suspect it takes its toll on morale too. they cant celebrate what they've done. they remain silent in where they failed.
  • The lander used its wing at Mach whatever, deployed its parachute, lost the heatshield and back shell, and operated a powered descent, and deployed the rover successfully, which operated for 347 sols, 257 more than the 90 it was planned for. All round that's a fantastic achievement for China. Nasa's Mars rovers are just embarassing. Just like mathematics, the JPL is unreasonably successful. We've just become so accustomed to Martian rovers exceeding their mission parameters by an order of magnitude, we
  • Nothing much is moving here for the next month or so either.

Every nonzero finite dimensional inner product space has an orthonormal basis. It makes sense, when you don't think about it.

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