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Forum:Space Shuttles - Space Station
Topic:[ISS] Growing vegetables and flowers (Veggie)
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onesmallstepI see a Whole Foods Market franchise on the ISS soon
lspoozYes padawan, if you want be an astronaut you have to eat your veggies.

To boldly grow where no one has grown before.

Robert PearlmanFirst space harvest meal captured in 4K Ultra High Definition:

mode1charlieIs that olive oil and balsamic vinegar they're putting on the leaves?
Robert PearlmanIt is... they tried the lettuce plain first, and then with the oil and vinegar. (I think Samantha Cristoforetti may have been responsible for the extra virgin olive oil, as I remember her mentioning it as among her food choices.)
onesmallstepIt would take an Italian to not forget that olive oil!
Robert PearlmanVeggie's new crop, flowering zinnias, don't seem to have fared as well as the earlier lettuce. From Scott Kelly on Twitter:
Our plants aren't looking too good. Would be a problem on Mars. I'm going to have to channel my inner Mark Watney.

The zinnias were intended as a test run for tomato plants to be grown in 2017.

Robert PearlmanThe zinnias were dying as a result of mold, which was traced back to excessive water in the experiment, Discovery News reports.
ISS commander and NASA astronaut Scott Kelly reported the mold to Mission Control Dec. 22 just as Veggie principal investigator Trent Smith was trying to manage the water problem. In pictures, Smith saw water on the plants a few days before. He told Discovery News he was trying to relay a command from NASA's station operations team to increase fan speed in Veggie, but the mold developed before the command could be put through.

One solution was, on Christmas Eve, to designate Kelly "commander" of Veggie. Kelly now has more autonomy to make changes to Veggie's conditions if he feels the plants need it.

Kelly seems to have a green thumb. Four of the plants died but three are still healthy, as he tweeted today:
Some of my space flowers are on the rebound! No longer looking sad!
Robert PearlmanFrom Scott Kelly on Twitter:
First ever flower grown in space makes its debut!

(To be accurate, it is not the first flower: that record goes to the Salyut 7 crew's Arabidopsis flowers in 1982 [and since then, among possible others, Don Pettit grew a sunflower in 2012].)

Robert PearlmancollectSPACE
First flower grown in space (or not): Zinnia blooms aboard space station

"First ever flower grown in space makes its debut!"

With that declaration, NASA astronaut Scott Kelly revealed to the world the bright orange zinnias that had blossomed on board the International Space Station on Jan. 16.

"Yes, there are other life forms in space!" he exclaimed on Twitter from 250 miles (400 km) above the Earth. He even coined a hashtag: #spaceflower.

Kelly, the space station's commander, had good reason to crow. Just a few weeks earlier, the zinnias, which are part of the NASA plant growth experiment "Veggie," had come close to dying due to a break out of mold. If it was not for a revised care plan by NASA botanists on the ground — and Kelly's own "green thumb" on orbit — there may not have been any flowers to tweet about.

But in conveying his excitement, Kelly made a mistake. His newly-bloomed zinnias were not the first flowers grown in space.

SolarplexusCongrats. They must dry it and put it in lucite.
fredtravIt is probably the nicest flower grown in space. The Soviet grew a plant throughout its lifecycle on Salyut in 1982. Arabodopsis Thaliana. Which flowered and went to seed. It is edible as well, but don't know if they ate any.

Then there is this. Not sure if it was flown already flowering or it flowered in space.

Still a great achievement and hopefully one they can build on.

Robert PearlmanFrom Scott Kelly on Twitter:
Just got my things returned from @Space_Station via @SpaceX, incl. #SpaceFlower. Let's see how it grows on Earth!

Mark Kelly replied:

Appreciate the excitement, @StationCDRKelly, but that #SpaceFlower looks like it needs to be thrown in the trash!
Robert PearlmanNASA release
Third Lettuce Crop Begins Growing Aboard Station

Just as farmers on Earth are planting leafy greens for the fall growing season, astronauts aboard the International Space Station are planting their third on-orbit crop of red romaine lettuce.

Early this morning, NASA astronaut Shane Kimbrough initiated the Veg-03 experiment, one of his first science assignments as a new crew member aboard the orbiting laboratory. As Kimbrough worked, members of the Veggie team watched from their consoles in the Experiment Monitoring Area located in Space Station Processing Facility at NASA's Kennedy Space Center in Florida. A live video downlink from the orbiting laboratory allowed the scientists to remotely watch Kimbrough's actions and ensure he did not encounter any challenges with the activity or hardware.

"Operations went great today! A little slower than expected, but all plant pillows were successfully primed for the first time in our Veg series," said Nicole Dufour, NASA's Veggie project manager. Plant pillows are small pouches already containing a growth medium, fertilizer and seeds; to start them growing, astronauts simply add a little water.

"We previously have had some hardware issues that prevented at least one pillow from each 'grow out' from being successfully primed, so we were very excited to achieve that milestone," she added.

Astronauts on future long-duration space missions will need to be able to grow their own food to supplement their diets. Using the Veggie plant growth facility aboard the station, Veg-03 builds on the successes of previous studies, including Veg-01, which resulted in the first-ever on-orbit harvest and sampling of fresh produce during the summer of 2015. Techniques learned from Veggie crops will sow benefits on Earth and help NASA prepare for the Journey to Mars.

The Veg-03 crop will be the Veggie team's first on-orbit attempt at a new, repetitive harvest technique termed 'Cut-and-Come-Again'.

"Once the plants are approximately four weeks old, a selection of leaves can be harvested for a bit of fresh lettuce and possibly science samples. Meanwhile, some leaves are left intact along with the core of the plant, and will continue to grow and produce more leaves," Dufour explained.

"We expect this will increase the on-orbit crop yield, as well as allow for more opportunities to supplement our astronauts' diets with fresh, nutritious food from the same plants, which is an important goal of the 'pick-and-eat' food concept."

Dufour reports the team is anxiously awaiting germination results, expected early next week.

Robert PearlmanFrom Shane Kimbrough on Twitter:
Loved planting lettuce today for the @ISS_Research Veggie experiment. Looking forward to seeing the results in a few weeks!
Robert PearlmanNASA release
Space Gardener Shane Kimbrough Enjoys First of Multiple Harvests

For a mid-afternoon snack, NASA astronaut Shane Kimbrough cut some of the "Outredgeous" Red Romaine lettuce leaves he nurtured during the past month aboard the International Space Station as part of a gardening harvest technique termed "cut-and-come-again."

Above: Charles Spern, a Veggie project engineer with the Engineering Services Contract, relays messages from the Kennedy Space Center Veggie team to assist the crew during the harvest.

Kimbrough initiated the most recent round of the Veggie experiment on Oct. 25, and for the first time in space, all six lettuce plants are growing simultaneously. Kimbrough has taken on the part-time role of on-orbit gardener, working virtually autonomously to cultivate the crops, although gardeners on the ground at Kennedy Space Center provided help in the beginning.

"During their first week of life, the small seedlings were getting too much water," said Veggie Project Manager Nicole Dufour. "This put the plants' growth a bit behind schedule, but they recovered nicely after we instructed Kimbrough to use a fan to dry up some of the moisture."

Cut-and-come-again is a repetitive harvest technique in which a selection of leaves can be harvested for a bit of fresh lettuce and possibly science samples. The remaining leaves and the core of the plant are left intact and will continue to grow and produce more leaves for subsequent harvests approximately every 10 days. The goal is to increase the on-orbit crop yield, as well as allow for more opportunities to supplement astronaut diets with fresh, nutritious food.

"Testing this method on-orbit, after using it on the ground, is very exciting for us," said Dufour. "A repetitive harvest allows us to provide more food for both the crew and for science, so it's a win-win. We are looking forward to hearing how Shane enjoys his first harvest!"

Today's harvest will be solely for crew consumption, and the plan is to have four harvests in total, with the final harvest targeted for the first of the new year. The yields from these harvests will be split between samples for science return and crew consumption.

This experiment also is an important demonstration of how NASA applies science across disciplines — in this case Space Biology to grow a healthy crop and Human Research to ensure astronauts remain healthy — to enable human space exploration. NASA's Space Life and Physical Sciences Research and Applications division integrates and funds such research.

Robert PearlmanNASA photo release
Six lettuce plants grow aboard the International Space Station as part of the Veg-03 experiment. At the rear of the chamber, a triangle plaque that crew members mounted this summer is visible. The plaque honors the memory and contributions of Thora Halstead and Ken Souza — both giants in the field of Space Biology, and reads: "Dedicated to the memory of space biology pioneers Thora Halstead and Ken Souza, for all they did to plant and nurture the seeds of biological research in space."

Halstead conceived of and implemented the NASA Small Payload Program for Life Science through her innovative use of the mid-deck lockers in the space shuttle. She nurtured the program through its early years in the '80s and was a founding member of the American Society for Gravitational and Space Research (ASGSR), America's premier society for space research in the life and physical sciences.

Souza was also a founding member of ASGSR, and made numerous contributions to the field of Space Biology during his nearly 50 years with NASA. He was the principal investigator in the first demonstration of successful reproduction of a vertebrate animal (frogs) in space. Souza also had numerous programmatic contributions to the field of Space Biology during his tenure at both Ames Research Center and NASA Headquarters.

Both Halstead's and Souza's early stewardship of a new science that became the discipline of space biology will continue to benefit future explorers on the journey to Mars.

Robert PearlmanNASA update:
Astronaut Peggy Whitson will initiate the next round of crops to be grown aboard the International Space Station today [Jan. 20]. For the first time, a Chinese cabbage variety named Tokyo Bekana will be grown in space.

The cabbage was chosen as a good candidate because it is a quick growing leafy green that is rated highly from a nutritional and taste perspective. Whitson will act as the on-orbit gardener, tending to the cabbage for about a month.

Robert PearlmanNASA release
Cabbage Patch: Fifth Crop Harvested Aboard Space Station

After spending nearly a month tending to the International Space Station's first crop of Chinese cabbage, astronaut Peggy Whitson harvested the leafy greens on Feb. 17.

At first, one of the six seeds of the Tokyo Bekana Chinese cabbage variety seemed to have been planted higher than the rest, keeping it from getting wet enough in the beginning. But the on-orbit gardener would not be deterred.

"Peggy is doing an amazing job," said Veggie Project Manager Nicole Dufour. "She wouldn't give up and she was able to get the seed in pillow D to germinate."

While the space station crew will get to eat some of the Chinese cabbage, the rest is being saved for scientific study back at Kennedy Space Center. This is the fifth crop grown aboard the station, and the first Chinese cabbage. The crop was chosen after evaluating several leafy vegetables on a number of criteria, such as how well they grow and their nutritional value. The top four candidates were sent to Johnson Space Center's Space Food Systems team, where they brought in volunteer tasters to sample the choices. The Tokyo Bekana turned out to be the most highly rated in all the taste categories.

Astronauts often report that their taste buds dull during spaceflight, and they frequently add hot sauce, honey or soy sauce to otherwise bland-tasting fare. One explanation for this may be that, in a reduced gravity environment, the fluid in astronauts' bodies shifts around equally, rather than being pulled down into their legs as we're accustomed to on Earth. The fluid that fills up their faces feels similar to the congestion from a cold and reduces their ability to smell. Researchers suggest this phenomenon — combined with all the other odors aboard the confined orbiting laboratory competing with the aroma of their food — may ultimately dull their sense of taste.

However, there is a backup plan to ensure the crew's culinary delight. If the fresh Chinese cabbage they grew doesn't awaken their taste buds on its own, packets of ranch dressing were also sent up to help them enjoy the fruits (or veggies) of their labor.

What's up next for Veggie? Two exciting prospects are on the horizon. Later this spring, a second, more efficient, Veggie system will be sent up to be seated next to the current one. It will provide side-by-side comparisons for future plant experiments and will hopefully make astronauts like Whitson happy to have a bigger space garden.

"I love gardening on Earth, and it is just as fun in space . . ." Whitson tweeted in early February. "I just need more room to plant more!"

Additionally, aboard the next resupply mission to the space station will an experiment involving Arabidopsis, a small flowering plant, and petri plates inside the Veggie facility. Arabidopsis is the genetic model of the plant world, making it a perfect sample organism for performing genetic studies. The principal Investigator is University of Florida's Dr. Anna Lisa Paul.

"These experiments will provide a key piece of the puzzle of how plants adjust their physiology to meet the needs of growing in a place outside their evolutionary experience," Dr. Paul said. "And the more complete our understanding, the more success we will have in future missions as we take plants with us off planet."

Later this year, the Advanced Plant Habitat, NASA's largest plant growth chamber, will make its way to the station, increasing the amount of scientific knowledge needed to dig deeper into long-duration food production for missions farther and farther from home.

Robert PearlmanNASA release
How Does Your Space Garden Grow?

Early Friday morning, astronauts onboard the International Space Station were busy at work, harvesting three varieties of leafy greens from the Veggie growth chamber and installing the next generation of plant research – the high-tech Advanced Plant Habitat.

Simultaneously Growing Three Plant Varieties a First for Veggie

Above: Three different varieties of plants growing in the Veggie plant growth chamber on the International Space Station were harvested this morning. (NASA)

The Veggie plant growth team kicked it up a notch with their sixth round of crops grown aboard the International Space Station with experiment VEG-03D. For the first time, three different plant varieties are simultaneously growing in the Veggie chamber.

On Oct. 27, station astronaut Joe Acaba harvested Mizuna mustard, Waldmann's green lettuce and Outredgeous Red Romaine lettuce, providing himself and his crew with the makings of a salad — once they top it with salad dressing sent up by the ground crew at Kennedy Space Center in Florida, of course.

"It's an impressive harvest. Joe did a great job!" said Veggie project manager Nicole Dufour.

"As a continuation of our Veg-03 tech demo efforts, we wanted to try something a little bit different. Building on some of our current ground testing, we decided to attempt a mixed crop. We were hoping that the visual diversity of the plants would be more enjoyable to the crew, as well as the variety of flavors offered by the different types of leafy greens."

During the harvest, Acaba only clipped about half of the leafy greens, leaving the rest to continue growing for a future yield. This technique, called cut-and-come-again repetitive harvesting, allows the crew to have access to fresh produce for a longer period of time.

Growing three different crops at the same time wasn't without its challenges.

"The biggest complication we have faced thus far has been how well the Mizuna has been growing," Dufour said. "Its long, spear-like stalks tend to get caught in the bellows as the crew opens and closes the unit to water the plants."

After the Veggie harvest, the crew kept on their virtual overalls and went on to install the Advanced Plant Habitat (APH), NASA's largest plant growth chamber.

Advanced Plant Habitat Turns On, Turns Up Research

As Acaba switched gears from Veggie to the new plant habitat around 5:45 a.m. EDT Friday, APH project manager Bryan Onate and his team walked Acaba through procedures to install the plant habitat into an Expedite the Processing of Experiments to Space Station, or EXPRESS, rack in the Japanese Experiment Module Kibo.

"It's amazing that a plant growth system that began from a blank sheet of paper about five years ago now is installed on the space station," Onate said. "Plant scientists are really going to be able to learn utilizing this system."

The plant habitat is a fully enclosed, closed-loop system with an environmentally controlled growth chamber. It uses red, blue and green LED lights, and broad spectrum white LED lights. The system's more than 180 sensors will relay real-time information, including temperature, oxygen content and moisture levels back to the team at Kennedy.

"APH will be the largest plant growth system on the space station," Howard Levine, the chief scientist in Kennedy's Utilization and Life Science Office who started working on APH seven years ago, said. "It will be capable of hosting multigenerational studies with environmental variables tracked and controlled in support of whole plant physiological testing and bioregenerative life support system investigations."

Once the team at Marshall completes an EXPRESS rack water flow test, the Kennedy team will power up the system. After the water cooling system with the APH passes the test, functional checkout of the plant habitat will begin and take about one week to complete.

Four power feeds to the plant habitat will be turned on and the Kennedy team will monitor the system's Plant Habitat Avionics Real-Time Manager, or PHARMER, for a response. This unique system provides real-time telemetry, remote commanding and photo downlink to the team at Kennedy.

After the PHARMER has verified all subsystems are a go, space station crew members will install the science carrier and initiate the growth of test crops — Arabidopsis seeds, small flowering plants related to cabbage and mustard, and dwarf wheat — during an overlapping timetable of about five weeks. During this time, the system will be monitored for its capability to grow plants, capture and reuse water, and maintain the atmosphere in the growth chamber.

"The test will help us to determine if the planting procedure is good and the habitat is operating as designed," Onate said. "The results of plant growth in the habitat will be compared with the results of tests completed in the control unit here at Kennedy."

All of these preparations are leading up to the initiation of PH-01, which will grow five different types of Arabidopsis and is scheduled to launch on Orbital ATK's ninth commercial resupply mission to the space station.

The nutritional boost of fresh food and the psychological benefits of growing plants become paramount as the agency plans for future missions to deep space destinations.

Robert PearlmanNASA release
NASA's Second Pepper Harvest Sets Record on Space Station

The longest – and perhaps the spiciest – plant experiment in the history of the International Space Station, Plant Habitat-04 (PH-04), concluded recently, 137 days after it began. On Nov. 26, Expedition 66 Flight Engineer Mark Vande Hei harvested and with other members of the crew sampled some of the 26 chile peppers grown from four plants in the orbiting laboratory's Advanced Plant Habitat (APH), with PH-04 also breaking the record for feeding the most astronauts from a crop grown in space.

Above: The four pepper plants that grew for 137 days aboard the International Space Station are pictured shortly before the second and final harvest for the Plant Habitat-04 experiment.

"PH-04 pushed the state-of-the-art in space crop production significantly," said Matt Romeyn, principal investigator for PH-04 from NASA's Kennedy Space Center in Florida. "With this experiment, we took a field cultivar of a Hatch chile pepper from New Mexico, dwarfed it to fit inside the plant habitat, and figured out how to productively grow the first generally recognized fruiting crop in space – all in a span of a couple years."

In June, a science carrier containing 48 sanitized pepper seeds launched to the space station. Expedition 65 crew member and NASA astronaut Shane Kimbrough, inserted the carriers into the facility and added water on July 12, starting the PH-04 experiment. Over the course of the experiment, the astronauts performed hands-on work, including removing all but four of the germinated plants, giving each plant enough room to grow, in a total area about the size of a large microwave oven.

The team at Kennedy monitored from the ground and controlled conditions inside the APH. Within several weeks, the plants flowered. The team ran the habitat's fans at different speeds to disperse pollen, and astronauts performed some pollination by hand. These efforts soon led to fruit. Vande Hei picked the first crop of seven peppers on Oct. 29. The crew ate the first harvest, with NASA astronaut and Expedition 65 flight engineer Megan McArthur adding the peppers to a taco made using fajita beef, rehydrated tomatoes and artichokes. During the second harvest, Vande Hei prepared 12 peppers for return to Earth, and the crew ate the rest as part of taco night. Some members of the crew filled out surveys as part of the data collected, and provided feedback about the peppers.

Above: NASA astronaut and Expedition 66 Flight Engineer Raja Chari holds a taco made with freshly harvested peppers grown aboard the International Space Station as part of the Plant Habitat-04 (PH-04) experiment. PH-04 concluded as the longest – and perhaps the spiciest – plant experiment in the history of the International Space Station.

"The level of excitement around the first harvest and the space tacos was unprecedented for us," Romeyn said. "All indications are some of the fruit were on the spicier side, which is not unexpected, given the unknown effect microgravity could have on the capsaicin levels of peppers."

Installed in the space station in 2018, the APH is an enclosed growth chamber with cameras and more than 180 sensors that are in constant interactive contact with a team at Kennedy. It joined NASA's other orbital growth chamber, the Vegetable Production System, known as Veggie, which is about the size of a carry-on suitcase. Beginning with red romaine lettuce in 2014, Veggie has yielded a variety of plant harvests, including different types of lettuce, Chinese cabbage, mizuna mustard, red Russian kale, and zinnia flowers, as well as scientific research on cotton, algae, and several other experiments. Since 2015, astronauts have eaten nine types of leafy greens grown in Veggie, as well as two crops grown in APH – radishes and peppers.

Unlike Veggie, APH is automated. Although APH's automation suggests less hands-on work is needed, the act of caring for the peppers illustrated the behavioral health improvements astronauts may experience when growing plants in space.

"The biggest benefit that I've seen personally is the impact growing plants has on the crew," said Nicole Dufour, PH-04's project manager. "They are so engaged when they are interacting with the plants, especially when it's a crop plant like the peppers. We discovered the crew had been taking the door shade off every day to check on the plants and look at the peppers. That's not something we asked them to do – they just wanted to because they enjoyed it so much."

Despite the excitement generated by the presence of peppers, the team made several observations about plant growth that provide valuable insight to future crop production in microgravity.

"For the most part, the plants have grown similarly on the space station and on the ground, but there have been a few differences," Romeyn said. "For one, the peppers are delayed by about two weeks on the space station. We think this is caused by a delay in germination, probably related to fluid challenges in microgravity. An interesting observation has been the pedicels – the stems – that connect to the flowers and fruit were not curved at all as seen on the ground, but instead were completely straight, which is definitely a microgravity effect."

When the chile peppers return to Earth, the PH-04 team at Kennedy will focus on analyzing the data collected, as well as studying samples from the orbiting outpost. The results will help show the effect growing in microgravity had on the crop.

Above: Peppers harvested from the Plant Habitat-04 experiment are set aside for the astronauts to eat. Twelve other peppers harvested from the experiment will return to Earth for analysis. During the first harvest astronauts ate seven peppers.

After the success of PH-04, the next planned edible crop experiments include growing dwarf tomatoes and testing new types of leafy greens. The team at Kennedy also has been laying the groundwork for growing microgreens, legumes, and herbs on the space station in the near future. The APH also has a cotton experiment planned, and Veggie will host other plant experiments before astronauts use it to grow more food they plan to eat.

"We went into this experiment knowing it wouldn't be easy to grow peppers in microgravity, but this experiment was a wildly successful demonstration that we're on the right path for space crop production," Romeyn said. "Veggie and APH are both great systems, and we pushed APH to the limits with these chiles. We plan to take lessons we've learned and continue to test and develop a much larger variety of plants for eventual integration into the crew diet. Our goal is to enable viable and sustainable crop production for future missions as people explore the Moon and Mars."

Robert PearlmanNASA release
NASA: Let's Ketchup on International Space Station Tomato Research

Growing food aboard the International Space Station is one of the many research investigations ripe for long duration spaceflight missions to the Moon and Mars.

Above: In 2022, astronaut Frank Rubio accidentally lost track of two tomatoes that had broken off a tomato plant and were bagged during a plant check for the eXposed Root On-Orbit Test System (XROOTS) experiment he conducted during his record-breaking 371-day stay aboard the space station. Expedition 70 crewmembers found the lost tomato nearly a year after the initial disappearance. (NASA)

NASA astronaut Frank Rubio recently shared the saucy story of two rogue tomatoes, which he had accidentally lost track of while harvesting for the eXposed Root On-Orbit Test System (XROOTS) experiment he conducted aboard the space station in 2022. The experiment uses hydroponic and aeroponic techniques to grow plants without soil or other growth media and could provide suitable solutions for plant systems needed for future space exploration missions.

While celebrating the space station's 25th anniversary of operations, Expedition 70 crew members revealed they found the lost tomatoes, joking that Rubio did not eat the tomatoes as they suspected. Despite being nearly a year after the initial disappearance of the tomatoes, the fruit was found in a plastic bag dehydrated and slightly squished. Other than some discoloration, it had no visible microbial or fungal growth.

During his U.S. record-breaking 371-day stay aboard station, Rubio also conducted another a-peeling experiment for the VEG-05 study, which helps address the need for a continuous fresh-food production system in space. This experiment used the space station's Veggie facility to grow dwarf tomatoes focusing on the impact of light quality and fertilizer on fruit production, microbial food safety, nutritional value, and taste acceptability by the crew.

While the rogue tomatoes found from the XROOTS experiment will not be returning to Earth for analysis as they were discarded, plant research aboard space station continues with Plant Habitat-03, returning to Earth during the upcoming splashdown of SpaceX's 29th commercial resupply mission. Plant Habitat-03 is one of the first multi-generational plant studies aboard the space station which could help researchers assess whether genetic adaptations in one generation of plants grown in space can transfer to the next. Results from this study could help identify genetic elements that increase the adaptability of plants to spaceflight providing insight into how to grow repeated generations of crops to provide food and other services on future space missions.

The benefits of growing plants in space don't stop there, astronauts report there are psychological benefits to time spent gardening, increasing their quality of life in space, and boosting their morale. Research aboard the space station is advancing the technology and scientific knowledge needed to successfully grow plants in space and help humans push the boundaries of space travel. This work also helps efforts to improve plants grown for food and other important uses here on Earth.

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