It’s Sunday morning, and Ryan is still asleep, and I got a bit bored and started playing around with one of those “blog title generators”. (For those of you for whom this is a new concept, they generate click-bait style headlines for a topic you give them.)
Space worms
21.08.2023 - 11:57 / theunconventionalgardener.com / Emma Doughty
Worms were the only survivors when space shuttle Columbia broke up on re-entry in 2003. Caenorhabditis elegans, nematodes, had been sent into space to test a synthetic nutrient solution. Their naturally short life-span meant that the survivors were several generations removed from the worms that were blasted into space at the beginning of the mission. Nematodes experiments have also been conducted on the International Space Station (ISS), looking at the effect of microgravity – it turns out that these worms can suffer muscle mass loss in the same way as humans do. Nematodes weren’t the only worms included on that fateful mission; among the student experiments (which included space bees) was one that aimed to investigate mealworms (Tenebrio molitor). Sadly they didn’t survive.
Small organisms such as these are very useful for bioscience research in space, but there are other reasons why worms might be a key feature of future space adventures. When the latest Antares supply mission to the ISS suffered a ‘launch mishap’ at the end of October, another student experiment – to investigate whether worm composting works in space – went up in smoke. The students wanted to find a way to recycle leftover astronaut food, and were sending redworms (Eisenia fetida) into space – the same worms you’re using here on Earth if you have a worm composter. Fortunately, the students have been told they will get another chance to run their experiment.
Composting worms can help to dispose of waste food because they can eat things we can’t, and including animals and insects into closed-loop agricultural systems in space is one way of completing the cycle and turning waste products into inputs. They can be used to improve the soil and produce
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