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    • By NASA
      5 min read
      Preparations for Next Moonwalk Simulations Underway (and Underwater)
      Europa Clipper is seen in the 25-Foot Space Simulator at JPL in February, before the start of thermal vacuum testing. A battery of tests ensures that the NASA spacecraft can withstand the extreme hot, cold, and airless environment of space. NASA/JPL-Caltech A gantlet of tests prepared the spacecraft for its challenging trip to the Jupiter system, where it will explore the icy moon Europa and its subsurface ocean.
      In less than six months, NASA is set to launch Europa Clipper on a 1.6-billion-mile (2.6-billion-kilometer) voyage to Jupiter’s ocean moon Europa. From the wild vibrations of the rocket ride to the intense heat and cold of space to the punishing radiation of Jupiter, it will be a journey of extremes. The spacecraft was recently put through a series of hard-core tests at the agency’s Jet Propulsion Laboratory in Southern California to ensure it’s up to the challenge.
      Called environmental testing, the battery of trials simulates the environment that the spacecraft will face, subjecting it to shaking, chilling, airlessness, electromagnetic fields, and more.
      NASA’s Europa Clipper is seen being lifted into the Space Simulator at JPL in February. Thermal vacuum testing, which lasted 16 days, ensures that the spacecraft will withstand the harsh conditions of space. NASA/JPL-Caltech NASA’s Europa Clipper is visible in the clean room of High Bay 1 within JPL’s Spacecraft Assembly Facility in January. The tent around the spacecraft was erected to support electromagnetic testing, which was part of a regimen of environmental tests. NASA/JPL-Caltech “These were the last big tests to find any flaws,” said JPL’s Jordan Evans, the mission’s project manager. “Our engineers executed a well-designed and challenging set of tests that put the system through its paces. What we found is that the spacecraft can handle the environments that it will see during and after launch. The system performed very well and operates as expected.”
      The Gantlet
      The most recent environmental test for Europa Clipper was also one of the most elaborate, requiring 16 days to complete. The spacecraft is the largest NASA has ever built for a planetary mission and one of the largest ever to squeeze into JPL’s historic 85-foot-tall, 25-foot-wide (26-meter-by-8-meter) thermal vacuum chamber (TVAC). Known as the 25-foot Space Simulator, the chamber creates a near-perfect vacuum inside to mimic the airless environment of space.
      At the same time, engineers subjected the hardware to the high temperatures it will experience on the side of Europa Clipper that faces the Sun while the spacecraft is close to Earth. Beams from powerful lamps at the base of the Space Simulator bounced off a massive mirror at its top to mimic the heat the spacecraft will endure.
      To simulate the journey away from the Sun, the lamps were dimmed and liquid nitrogen filled tubes in the chamber walls to chill them to temperatures replicating space. The team then gauged whether the spacecraft could warm itself, monitoring it with about 500 temperature sensors, each of which had been attached by hand.
      Watch as engineers and technicians move NASA’s Europa Clipper into the thermal vacuum chamber at JPL in February 2024.
      Credit: NASA/JPL-Caltech TVAC marked the culmination of environmental testing, which included a regimen of tests to ensure the electrical and magnetic components that make up the spacecraft don’t interfere with one another.
      The orbiter also underwent vibration, shock, and acoustics testing. During vibration testing, the spacecraft was shaken repeatedly – up and down and side to side – the same way it will be jostled aboard the SpaceX Falcon Heavy rocket during liftoff. Shock testing involved pyrotechnics to mimic the explosive jolt the spacecraft will get when it separates from the rocket to fly its mission. Finally, acoustic testing ensured that Europa Clipper can withstand the noise of launch, when the rumbling of the rocket is so loud it can damage the spacecraft if it’s not sturdy enough.
      “There still is work to be done, but we’re on track for an on-time launch,” Evans said. “And the fact that this testing was so successful is a huge positive and helps us rest more easily.”
      Looking to Launch
      Later this spring, the spacecraft will be shipped to NASA’s Kennedy Space Center in Florida. There, teams of engineers and technicians will carry out final preparations with eyes on the clock. Europa Clipper’s launch period opens Oct. 10.
      After liftoff, the spacecraft will zip toward Mars, and in late February 2025, it will be close enough to use the Red Planet’s gravitational force for added momentum. From there, the solar-powered spacecraft will swing back toward Earth to get another slingshot boost – from our own planet’s gravitational field – in December 2026.
      Then it’s on to the outer solar system, where Europa Clipper is set to arrive at Jupiter in 2030. The spacecraft will orbit the gas giant while it flies by Europa 49 times, dipping as close as 16 miles (25 kilometers) from the moon’s surface to gather data with its powerful suite of science instruments. The information gathered will tell scientists more about the moon’s watery interior.
      More About the Mission
      Europa Clipper’s main science goal is to determine whether there are places below the surface of Jupiter’s icy moon, Europa, that could support life. The mission’s three main science objectives are to determine the thickness of the moon’s icy shell and its surface interactions with the ocean below, to investigate its composition, and to characterize its geology. The mission’s detailed exploration of Europa will help scientists better understand the astrobiological potential for habitable worlds beyond our planet.
      Managed by Caltech in Pasadena, California, JPL leads the development of the Europa Clipper mission in partnership with the Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland, for NASA’s Science Mission Directorate in Washington. APL designed the main spacecraft body in collaboration with JPL and NASA’s Goddard Space Flight Center in Greenbelt, Maryland. The Planetary Missions Program Office at NASA’s Marshall Space Flight Center in Huntsville, Alabama, executes program management of the Europa Clipper mission.
      Find more information about Europa here:
      europa.nasa.gov
      News Media Contacts
      Gretchen McCartney
      Jet Propulsion Laboratory, Pasadena, Calif.
      818-393-6215
      gretchen.p.mccartney@jpl.nasa.gov
      Karen Fox / Charles Blue
      NASA Headquarters, Washington
      301-286-6284 / 202-802-5345
      karen.c.fox@nasa.gov / charles.e.blue@nasa.gov
      2024-032
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      Last Updated Mar 27, 2024 Related Terms
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    • By European Space Agency
      When it comes to predicting what our climate will be like in the future, vegetation matters. Plants and trees exert a powerful influence over both the energy cycle and the water cycle. And, crucially, it is estimated that vegetation draws down well over three billion tonnes of carbon from the atmosphere each year – this is equivalent to a third of greenhouse-gas emissions from human activity.
      Accounting for vegetation growth is clearly important in the complex climate puzzle – and the release of a new satellite dataset is set to help climate modellers with the challenge of evaluating the impacts of climate change.
      View the full article
    • By NASA
      3 Min Read Order Up: High School Students Compete to Launch Their Food into Space with NASA HUNCH Culinary Competition
      High School students in chef jackets line long black tables at NASA's Langley Research Center preparing savory breakfast dishes fit for astronauts onboard the International Space Station. Credits: NASA/Angelique Herring On Monday, Feb. 26, visitors to the Integrated Engineering Services Building at NASA’s Langley Research Center in Hampton, Virginia, were greeted by the mouthwatering smell of roasted garlic, sautéed peppers and onions, fragrant herbs, and the unexpected discovery that the building’s main hallway had been turned into a pop-up kitchen for local high school students.
      These students were participants in NASA HUNCH Culinary. NASA HUNCH (High School Students United with NASA to Create Hardware) is a Project Based Learning program where high school students participate in the design and fabrication of real world valued products for NASA. HUNCH has six areas of focus that students may choose to participate in: Precision Machining, Softgoods, Design and Prototype, Food Science, Communications, and Software.
      High School students chop vegetables as they prepare their savory entry for NASA’s HUNCH Culinary Challenge.NASA/Angelique Herring The HUNCH Astronaut Culinary Program provides students the opportunity to create dishes for astronauts aboard the International Space Station. Students must create tasty recipes following a specific food processing procedure and meeting certain nutritional requirements. These dishes must meet the standards of the NASA Johnson Space Center Food Lab in Houston, Texas.
      Through this program, students gain culinary experience as well as experience with research and presenting their work in a professional environment. Students spend weeks perfecting their recipes so that on competition day, they can recreate their dishes in person at various NASA centers across the country.
      This year, HUNCH Culinary student teams were tasked with the challenge of creating a savory breakfast dish that included a vegetable. The recipes had to fall between 150 and 350 calories, contain less than 12 grams of fat and 250 milligrams of sodium, have at least one gram of fiber, and “must process well for spaceflight and for use in microgravity” among several other requirements.
      An eager hand reaches for a small serving of eggs scrambled with vegetables and topped with seeds as a larger skillet of the savory breakfast dish sits to the left.NASA/Angelique Herring Several students described challenges around creating a recipe under these guidelines. Nyland Clay, a student at Landstown High School in Virginia Beach, explained his team’s problem solving around the minimal sodium guideline.
      “We were able to work around that by using different types of flavors in order to substitute for the extra sodium,” he said. “One of the ways we did this was with poblano peppers. When seared over a grill, they make a nice smoky flavor that doesn’t add any sodium whatsoever.”
      Nyland’s team additionally chose to use ground turkey in their sweet potato hash recipe instead of ground beef to avoid unnecessary fat.
      Travis Walker, culinary instructor at Phoebus High School in Hampton and former executive catering chef manager for the NASA Langley Exchange, spoke highly of his students as his reason for teaching.
      “The most rewarding part is just watching the growth of the kids,” he said. “From the day you get them and they can’t boil water, to the time they get here and they’re in these competitions and excelling — that’s the most rewarding part.”
      The student groups with the highest scores will be invited to Johnson Space Center in Houston for a final competition where their dishes will be judged by Johnson Food Lab personnel, industry professionals, the ISS program office, and astronauts. The criteria are quality, taste, and the students’ work on the research paper and presentation video. The winning entree will be processed by the Johnson Space Center Food Lab and sent up to the station for the astronauts to enjoy.
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      Last Updated Mar 26, 2024 Related Terms
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    • By NASA
      “Don’t be afraid to go after the things that you’re dreaming about that aren’t necessarily possible right now. We do things all the time now that were impossible 10 years ago! Figure out how to make the impossible possible, if it’s what you want to do.
      “One of my cornerstone pinnacles [is], ‘Show up to work [and] life with integrity and intent.’ So, accomplish your goals with integrity, intent, and a mission. Stick to that and have the confidence to do that, and be OK with messing up and failing, and have fun with those things.
      “And if you are not doing something that you love, and you’re not having fun, then think about what those things are and go towards that.”
      — Meghan Everett, International Space Station Program Deputy Chief Scientist, NASA’s Johnson Space Center
      Image Credit: NASA / Josh Valcarcel
      Interviewer: NASA / Michelle Zajac
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      View the full article
    • By Amazing Space
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