Raphael Schilling, one of the three student team members who built V3PO, prepared the space station experiment by planting 0.6-inch (1.5 cm) cuttings of Ficus pumila into agar-based nutrient gel four cuttings in each of two compartments.
What started out as an after-school science-club project is now an important experiment aboard the International Space Station.
Astronauts have grown plants from seeds in microgravity before, but three students at the Edith-Stein School Ravensburg & Aulendorf in Germany wondered whether plants could also grow from cuttings. If proven possible, it would be a key development that would help astronauts quickly grow food in space. The students raised money through crowdfunding and industry sponsors to develop their experiment, called V3PO, to fly to the space station.
Maria Koch, Raphael Schilling and David Geray, who started the project about three years ago as 16-year-old students, traveled to Kennedy Space Center in Florida to watch the launch, which was delayed a day before finally lifting off Feb. 19. [Plants in Space: Photos by Gardening Astronauts]
The V3PO team, along with their teacher and two assisting aerospace engineers (l-r) Chriss Bruderrek, David Geray, Maria Birlem, Raphael Schilling, Brigitte Schuermann, Maria Koch handed over the final experiment to NASA's operations team 36 hours before the scheduled launch.
The team was disappointed when the launch was called off with just 13 seconds to go, but were elated the next day when it finally flew, said Sebastian Rohrer, head of fungicide early biology at the German chemical company BASF's crop protection division and a scientific adviser to the students. "We kind of were staring at the skies and couldn't really believe it that it's now really happened," he told Space.com by phone from near the launch site.
"Everybody was standing there, mouths open, and didn't really know what to do, but then we started shaking hands and cheering and from there, it kind of erupted," he added.
BASF was one of the major sponsors of the students' project, and the company also provided materials and equipment for the students to use.
On Feb. 23, the space station crew installed the NanoRacks module with the experiment, which activated lights and a video feed to document the plants' fate. The whole space-borne package will return to Earth along with SpaceX's Dragon spacecraft in about two weeks, and in the meantime monitoring images are sent down daily.
The V3PO team chose a small, decorative plant called Ficus pumila (commonly called the creeping fig) for the experiment. The plant is compact enough to fit in the two compartments of the tiny box sent to space; each compartment measures 1.6 by 1.2 by 1.8 inches (4 by 3 by 4.5 centimeters). It also can withstand the temperature changes inherent in a flight through space; the plants were cooled to 4 degrees Celsius (7.2 degrees Fahrenheit) beforehand to make sure they wouldn't grow until they were in microgravity. Four cuttings of the plant, along with a nutrient gel, were placed in each chamber.
After the first launch attempt was called off with just 13 seconds left on the clock, the rocket with V3PO aboard finally lifted off Feb. 19. Here, the students (l-r) Sebastian Rohrer, Maria Koch, Brigitte Schuermann, Chriss Bruderrek, Maria Birlem, Raphael Schilling, David Geray celebrate from their nearby viewpoint.
When the experiment lands back on Earth, the students will re-create the atmospheric conditions the plants went through, to see how Earth-bound plants fare in the same circumstances, the students and teacher, Brigitte Schuermann, told Space.com by phone (through a translator).
On Earth, pieces cut from the plants' stems can shoot out their own roots and grow into new plants a behavior that can be used to replicate crops such as tomatoes on Earth. If the little plant cuttings can grow roots without the help of gravity, they could pave the way for easier food growing on long trips through space, like those astronauts will experience when traveling to Mars someday, the students said.
Email Sarah Lewin at slewin@space.com or follow her @SarahExplains. Follow us @Spacedotcom, Facebook and Google+. Original article on Space.com.
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Can Plants Grow from Clippings on the Space Station? Student Project Will Find Out - Space.com
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