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21.08.2023 - 11:38 / theunconventionalgardener.com / Emma Doughty
Header image: Space Salad, credit: University of Adelaide
When you’re heading into deep space, you need to pack light. But one of the keys to mission success is good nutrition, so how do you optimise your space farm to produce the best combination of veggies efficiently?
The University of Nottingham (UK) and the University of Adelaide (Australia) run a joint research programme focusing on astropharmacy, farming and food research. The programme aims to design space farming systems to meet astronauts’ nutritional and psychological needs during long-duration space missions.
As a first step, the research team has developed a computational model, based on NASA’s suggested daily dietary requirements for astronauts, to predict the best combination of plants for a ‘space salad’.
The other selection criteria included:
Shu Liang led the research during her PhD student at the University of Nottingham’s School of Biosciences. Shesays:
“Food is such an integral part of staying healthy and happy and there are many factors that contribute to this. As well as the nutritional values and ability to grow the plants in space we also looked at other important aspects of a space diet to promote astronaut well-being including colour, taste and eating together.”
The ‘space salad’ the computer created involves specific quantities of Sweet Potato, Kale, Soybeans, Barley, Peanuts, Poppy and Sunflower Seeds.
Professor Volker Hessel at the University of Adelaide explained:
“We have simulated a mix of 6-8 crops that deliver all the required nutrients to an astronaut, which is different to what people need on Earth. While there are dozens of crops that can fulfill the nutrient demand, we needed to find those that could pack a punch and deliver the calories
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The garden and I have not spent much time together this summer. I’ve been busy… there was weather… there have been too many days when I didn’t feel like going outside. Since the courgette and summer squash started fruiting, I’ve been a bit afraid to go outside in case there’s a mountain of fruit to pick. But the light was nice this morning, so I ventured outside to take a few photos (and the squashes seem to be slowing down, so it’s safe).
An ideal seed compost is able to retain water, whilst at the same time letting excess water drain away to provide an environment that is damp but not waterlogged. It allows penetration of plant roots and is able to anchor plants, but has space for air. Its texture is consistent, and it is free from pests, diseases and weeds that would compete with the seedlings. As we have seen, it doesn’t need to contain many nutrients if seedlings are going to be pricked out; seedlings growing in modules will either need enough nutrients in the compost to support them through their first weeks of life, or suitable supplementary feeding.
Every month this year I’ve been trying to read one of the unread books on my shelf, and to then decide whether it gets to keep its spot or needs to be set free to find a new home. For June I chose Nature’s Wild Harvest by Eric Soothill and Michael J. Thomas. It was published in 1983, and has been sitting on my bookshelf for three years, since I bought it in our local secondhand bookshop (which only opens on Wednesdays).
Join Emma the Space Gardener as she explores gardening on Earth… and beyond! In this episode, Emma recaps the latest space plant news and then talks about some of the seeds with space stories.
Move over, Mark Watney, there’s a new space botanist heading for Mars! Ryan and I have just finished watching the new Netflix series Away, which follows (over 10 episodes) the quest of five international astronauts to be the first people to set foot on the red planet.
While we’re waiting for Tim Peake to blast off to the International Space Station (ISS) to begin his Principia mission, I thought it might be fun to have a look at the first Briton in space – Helen Sharman, who was also the first woman to visit the Mir space station, in 1991.
At 11 pm on Friday (BST, 18:01 EDT), SpaceX launched an uncrewed Dragon cargo spacecraft on its way to the International Space Station (ISS). This Dragon capsule has been to the ISS twice before, making it the first to fly in space for a third time. This is the 18th SpaceX Commercial Resupply Services (CRS) contract mission for NASA: CRS-18.
In Once Upon a Time I Lived on Mars, Kate Greene talks about Shannon Lucid, the NASA astronaut who spent six months living on the Russian space station Mir. Shannon, it turns out, was a bookworm. During her stay, she read 50 books and improvised shelving from old food boxes, complete with straps to stop the books floating off. This was in 1996, a good decade before the invention of the Kindle, and so these were real books. She apparently chose titles with the highest word to mass ratio, since launch weight is a critical factor! Lucid left her library behind for future spacefarers, but it burned up when Mir was de-orbited in 2001.
Ryan’s dad likes mint sauce on pretty much anything. I grew up in a “mint sauce with roast lamb” household, so I found this slightly odd. In truth I have never cottoned on to the delights of mint sauce, so we don’t keep a jar in the house. It wasn’t until very recently that I discovered that Ryan really likes mint sauce, too.
Earlier this month, the Met Office announced that its weather radar was picking up something other than rain clouds – swarms of flying ants.
World Bee Day seems like a good day to have a bee-related edition of The Hive, my round-up of positive (solarpunk) eco news stories. The UN designated 20 May as World Bee Day in 2017, to raise awareness of the importance of pollinators, the threats they face and their contribution to sustainable development.