4. May 2021
NASA seeds germinate in DLR's EDEN ISS greenhouse

Start of a new se­ries of tests for plant cul­ti­va­tion on the Moon and Mars

Jess Bunchek holding her first harvest
Jess Bunchek hold­ing her first har­vest
Image 1/4, Credit: © AWI / Ort

Jess Bunchek holding her first harvest

Jess Bunchek from NASA's Kennedy Space Cen­ter will be a guest re­searcher at DLR's EDEN ISS Antarc­tic green­house dur­ing 2021.
Jess Bunchek harvesting salad
Jess Bunchek har­vest­ing sal­ad
Image 2/4, Credit: © AWI / Baden

Jess Bunchek harvesting salad

Fresh sal­ad from the EDEN ISS Antarc­tic green­house makes a wel­come change on the menu for the 10-per­son over­win­ter­ing team at Neu­may­er Sta­tion III
View of Neumayer III Station
View of Neu­may­er III Sta­tion
Image 3/4, Credit: DLR (CC BY-NC-ND 3.0)

View of Neumayer III Station

Neu­may­er III Sta­tion with ad­ja­cent fa­cil­i­ties. The EDEN ISS green­house can be seen in the up­per cen­tre of the im­age.
EDEN ISS Antarctic greenhouse
EDEN ISS Antarc­tic green­house
Image 4/4, Credit: DLR / NASA / Bunchek

EDEN ISS Antarctic greenhouse

The DLR Antarc­tic green­house EDEN ISS is lo­cat­ed on the Ek­ström Ice Shelf, ap­prox­i­mate­ly 400 me­tres away from the Ger­man Neu­may­er Sta­tion III.
  • NASA guest researcher Jess Bunchek will conduct research in the Antarctic greenhouse until early 2022
  • The new research mission focuses on crop yield, plant irrigation, microbiology, crew time and effects on the well-being of the overwintering team.
  • The YouTube livestream for the DLR press conference 'EDEN ISS – Antarctic Greenhouse Mission 2021' will take place on 4 May 2021 at 16:00 CEST.
  • Focus: Space, food supply of the future

Press Conference EDEN ISS – Antarctic Greenhouse Mission 2021
DLR and NASA begin new series of tests for plant cultivation on the Moon and Mars: Online press conference with live connection to the EDEN ISS Antarctic greenhouse On Tuesday, 4 May 2021, the international team at the EDEN ISS Antarctic greenhouse will appear in a joint online press conference to...
Credit: Alfred-Wegner-Institut (AWI), German Aerospace Center (DLR) and NASA

Nine weeks of darkness and temperatures down to minus 50 degrees Celsius. Under these harsh conditions of Antarctica, NASA and the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) have begun a joint series of experiments on vegetable cultivation techniques for use on the Moon and Mars. Until early 2022, NASA guest scientist Jess Bunchek will research how future astronauts could grow lettuce, cucumbers, tomatoes, peppers and herbs, using as little time and energy as possible. To this end, she will be working at DLR's EDEN ISS Antarctic greenhouse, where she will put greenhouse technologies and plant varieties to the test. She is also recording any effects the greenhouse and its yield have on the isolated hibernation crew in the perpetual ice. Bunchek is part of the 10-person overwintering crew on Neumayer Station III, operated by the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI).

First harvest – Lettuce, mustard greens, radishes and herbs

"The polar night will soon begin here on the Antarctic Ekström Ice Shelf. With the nine other members of the overwintering crew, it almost feels like we are alone on another planet," says Bunchek. "In this hostile world it's fascinating to see the greenery thrive without soil and under artificial light." Bunchek is a botanist from the Kennedy Space Center, where she has primarily supported the VEGGIE project on the International Space Station (ISS). She was able to sow the first seeds in recent weeks, following a technical reconditioning of the EDEN ISS platform conducted by her and the DLR team. The first harvest, which included lettuce, mustard greens, radishes and various herbs, followed a few days ago.

Kohlrabi (left) and broccoli (right) in the EDEN ISS Antarctic greenhouse
Kohlrabi (left) and broccoli (right) in the EDEN ISS Antarctic greenhouse
In addition to lettuces and herbs, kohlrabi (left) and broccoli (right) also thrive without soil under artificial light in the EDEN ISS Antarctic greenhouse.
Credit: DLR / NASA / Bunchek

NASA seeds and new nutrient supply system

The EDEN ISS greenhouse uses particularly robust varieties that were selected by the EDEN ISS Project team and from experiments at NASA’s Kennedy Space Center and as part of the VEGGIE project on the ISS. The DLR/NASA mission also aims to record and compare the growth and yield of the crop varieties under the conditions of the Antarctic greenhouse. An additional focus will be studying which microbes thrive in the greenhouse alongside the cultivated plants.

NASA will also be testing a plant watering concept in the EDEN Module that can operate in u-gravity settings, like the ISS. The system contains the water and delivers it to the plants by a passive method. "This will provide a side-by-side comparison with the aeroponically grown plants of EDEN ISS" says Ray Wheeler, plant physiologist at NASA’s Kennedy Space Center. In aeroponic irrigation, the roots of the plants without soil are regularly sprayed with a nutrient solution.

Crew time – a precious commodity

Sowing, harvesting, tending, cleaning, maintaining, calibrating, repairing and conducting scientific activities. Bunchek records every second of her activities in the Antarctic greenhouse with a special time-recording eight-sided die, as crew time will be a precious commodity on future missions to the Moon and Mars. "In an initial test run of the greenhouse during the 2018 mission, we found that operations still took too much time," explains EDEN ISS project leader Daniel Schubert from the DLR Institute of Space Systems in Bremen. "Now we are working on optimising processes and procedures. We have learned a lot about operating a greenhouse under extreme conditions. We're applying all this during the current joint DLR/NASA mission." In addition to the crew's time, the focus is on their well-being. The overwinterers regularly answer questions about their eating habits or how the plants affect their mood. "We hope to increase our understanding of having plants and fresh food for crews in remote, isolated settings like Neumayer III and ultimately for space" says Wheeler.

Eight months in isolation

On 19 January, Jess Bunchek reached the Antarctic continent on board the research vessel Polarstern. Since 19 March, the 10-person overwintering crew has been on their own at Neumayer Station III. "EDEN ISS is an asset for the crew in many ways," says Tim Heitland, Medical Coordinator and Operations Manager at AWI. "I know from my own overwintering experience just how much you can begin to miss fresh produce. It's not just about the taste, but also the smells, the colours and the fascinating fact that something can grow in this inhospitable environment. That's why there are always volunteers in the overwintering teams to help cultivate and harvest the plants." The polar night at Neumayer Station III begins this year on 21 May, and the first rays of sunlight will not reach the station again until 23 July. Researchers for the summer season and new supplies will end the isolation of this year’s overwintering crew around the beginning of November.

The activities at the EDEN ISS Antarctic greenhouse can be followed on social media using the hashtag #MadeInAntarctica. The Antarctic greenhouse has Facebook and Instagram accounts, as well as a flickr image gallery. Jess Bunchek also writes about her personal experiences of the Antarctica mission in the dedicated DLR blog. A new tool will let you see the EDEN ISS plants in Antarctica. Each day the updated images from 34 cameras will make it possible to see how the plants are growing.

EDEN ISS: Food supply of the future

Global food production is one of the key societal challenges of the 21st century. An increasing world population and the simultaneous upheavals caused by climate change call for new ways of crop cultivation – even in regions with unfavourable climatic conditions. For deserts and areas with low temperatures, as well as for missions to the Moon and Mars, a closed greenhouse enables harvests that are independent of weather, sun and season, as well as lower water consumption and eliminates the need for pesticides and insecticides. As part of the EDEN ISS project, such a greenhouse of the future is being subjected to long-term testing under the extreme conditions found in Antarctica. In the first extensive overwintering research campaign in 2018, the greenhouse produced a total of 268 kilograms of food in nine and a half months with just 12.5 square metres of available space. This included 67 kilograms of cucumbers, 117 kilograms of lettuce and 50 kilograms of tomatoes. The research has allowed for the development of a greenhouse concept for future space missions.

  • Falk Dambowsky
    Ger­man Aerospace Cen­ter (DLR)

    Com­mu­ni­ca­tions and Me­dia Re­la­tions
    Telephone: +49 2203 601-3959
    Linder Höhe
    51147 Cologne
  • Daniel Schubert
    Ger­man Aerospace Cen­ter (DLR)
    In­sti­tute of Space Sys­tems
    Robert-Hooke-Straße 7
    28359 Bremen
  • Sebastian Grote
    Al­fred We­gen­er In­sti­tute (AWI)
    Com­mu­ni­ca­tions and Me­dia Re­la­tions
    Telephone: +49 471 4831-2006
    Am Handelshafen 12
    27570 Bremerhaven


Stay up to date and sub­scribe to the DLR newslet­ter with ar­ti­cles from the DLR ed­i­to­ri­al team in Ger­man and En­glish.

Main menu