China set up a tiny farm on the moon in 2019. How did it do?

Comments

• Car@lemmy.dbzer0.com ⁨1⁩ ⁨year⁩ ago

  Massive TLDR:

  “Eventually, it was reported that the sprouted plants had died, that the potatoes failed to sprout, and that the fruit flies failed to hatch. The total run time for the experiment was nine days instead of the planned 100.”

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  • NateNate60@lemmy.world ⁨1⁩ ⁨year⁩ ago

    An important addition to that may explain why: The lunar night approached -150° C and the experiment failed to keep the steady 24° C that it was supposed to maintain, so the plants died. I don’t think it was because growing plants on the moon is intrinsically impossible.

    I also wonder how they expected 18 mL of water to last more than a few days anyway. Perhaps someone smarter than me can answer that.

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    • KISSmyOS@lemmy.world ⁨1⁩ ⁨year⁩ ago

      In a closed system the water isn’t going anywhere, so it’s possible that a very small amount of enough for 100 days.
      I’m not a space gardener, though.

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    • snooggums@kbin.social ⁨1⁩ ⁨year⁩ ago

      I also wonder how they expected 18 mL of water to last more than a few days anyway. Perhaps someone smarter than me can answer that.

      In any enclosed system the water circulates through the plant, evaporates into the air, possibly condenses on surfaces, then is drawn back into the plants again. There is no need to add water as long as there is enough tongo through the cycle.

      This was basically a heated terrarium that did not stay warm enough.

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    • uphillbothways@kbin.social ⁨1⁩ ⁨year⁩ ago

      2 week long nights will kill any plant. 2 week long days will kill most. Can't garden on moon.

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    • athos77@kbin.social ⁨1⁩ ⁨year⁩ ago

      The entire farm was about the size of an ice cube tray, and had a growing volume of about 2 cups. Terrariums in general would use about 6 tsps for a 2-cup terrarium; the Chinese experiment used about 3.5 tsps. I'm not sure why they used that amount of water; I would speculate (and it's only speculation) that the plants they choose didn't need more, or possibly the lower gravity on the moon meant that the water was generally more accessible to the plants.

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    • angrystego@lemmy.world ⁨1⁩ ⁨year⁩ ago

      Plants grow mostly by sucking water inside their cells, so the water should soon end up stuck in the plants if everything else went right. I suppose they did count with it, but 18 ml of water is still suprizingly little.

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  • AceQuorthon@lemmy.dbzer0.com ⁨1⁩ ⁨year⁩ ago

    Just like when I try to take care of plants at home

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• CJOtheReal@lemmy.sdf.org ⁨1⁩ ⁨year⁩ ago

  They grow the Hundred Acre Wood

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  • XTL@sopuli.xyz ⁨1⁩ ⁨year⁩ ago

    But it’s in an undisclosed location and for party members only.

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