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By European Space Agency
At the International Astronautical Congress (IAC) in Milan this week, ESA signed a contract for Element #1, the first phase of the HydRON Demonstration System. HydRON, which stands for High thRoughput Optical Network, is set to transform the way data-collecting satellites communicate, using laser technology that will allow satellites to connect with each other and ground networks much faster.
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By Space Force
The multinational named operation represents a growing commitment among the closest allies in space to jointly strengthen defenses and deter aggression, ensuring space remains a domain that benefits all of humanity.
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By NASA
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Science in Space: October 2024
Cultures around the world celebrate Halloween on Oct 31. In many places, in addition to people wearing costumes and eating candy, this day is associated with spooky decorating using fake blood, skeletons, flies, and spiders, some of them glow-in-the-dark.
Crew members on the International Space Station have been known to indulge in a bit of dressing up and candy consumption to mark the day, and the research they conduct year-round occasionally involves these iconic Halloween themes. No tricks, just treats.
JAXA astronaut Koichi Wakata and NASA astronauts Frank Rubio, Nicole Mann, and Josh Cassada dressed up for Halloween 2022.NASA A current investigation, Megakaryocytes Flying-One or MeF1, investigates how components of real blood known as megakaryocytes and platelets develop and function during spaceflight. Megakaryocytes are large cells found in bone marrow and platelets are pieces of these cells. Both play important roles in blood clotting and immune response. Results could improve understanding of changes in inflammation, immune responses, and clot formation in spaceflight and on the ground.
Creepy crawlies
Fake spiders and flies are popular Halloween decorations (and fodder for fun pranks). Several investigations on the space station have used real ones.
Fruit Fly Lab-02 used fruit flies, Drosophila melanogaster, to examine the cellular and genetic mechanisms that affect heart health during spaceflight. The flies experienced several effects on cardiac function, including changes in muscle fibers, that could be a fundamental response of heart muscles to microgravity.
MVP Fly-01 looked at how spaceflight affects immune function and resulting changes to the nervous system of the same type of flies, along with the value of artificial gravity as a countermeasure. Researchers found that artificial gravity provided some protection to physical changes to the central nervous system from spaceflight. Spiders, Fruit Flies and Directional Plant Growth (CSI-05) compared the weaving characteristics of golden orb-web spiders on the space station and the ground. Under natural conditions, the spiders build asymmetric webs with the hub near the upper edge, where they wait for prey. In microgravity, most but not all webs were quite symmetric, although webs built when the lights were on were more asymmetric and the spiders waited facing away from the lights. This could mean that in the absence of gravity, the spiders orient to the direction of light.
A golden-orb weaver and its web on the space station.NASA Bad to the bones
Everyone needs healthy bones and skeletons, and not just on Halloween. But spaceflight and aging on Earth can cause loss of bone mass. Space station research has looked at the mechanisms behind this loss as well as countermeasures such as exercise and nutrition.
Bisphosphonates as a Countermeasure to Bone Loss examined whether a medication that blocks the breakdown of bone, in conjunction with the routine in-flight exercise program, protected crew members from bone mineral density loss during spaceflight. The research found that it did reduce loss, which in turn reduced the occurrence of kidney stones in crew members.
Assessment of the Effect of Space Flight on Bone (TBone) studied how spaceflight affects bone quality using a high-resolution bone scan technique. Researchers found incomplete recovery of bone strength and density in the tibia (a bone in the lower leg), comparable to a decade or more of terrestrial age-related bone loss. The work also highlighted the relationship between length of a mission and bone loss and suggested that pre-flight markers could identify crew members at greatest risk.
In a merging of blood and bones, CSA’s Marrow looked at whether microgravity has a negative effect on bone marrow and the blood cells it produces. Decreased production of red blood cells can lead to a condition called space anemia. Findings related to the expression of genes involved in red blood cell formation and those related to bone marrow adipose or fat tissue, which stores energy and plays a role in immune function, could contribute to development of countermeasures. Marrow results also suggested that the destruction of red blood cells (known as hemolysis) is a primary effect of spaceflight and contributes to anemia. Bad news for vampires.
ESA astronaut Thomas Pesquet storing Marrow samples in MELFI.NASA It glows in the dark
Fluorescence – a cool effect at a ghoulish party – also is a common tool in scientific research, enabling researchers to see physical and genetic changes. The space station has special microscopes for observing glow-in-the-dark samples.
For Medaka Osteoclast 2, an investigation from JAXA (Japan Aerospace Exploration Agency), researchers genetically modified translucent Medaka fish with fluorescent proteins to help them observe cellular and genetic changes the fish experience during spaceflight. One analysis revealed a decrease in the mineral density of bones in the throat and provided insights into the mechanisms behind these changes.
A translucent Medaka fish with fluorescent proteins showing its bone structure.Philipp Keller, Stelzer Group, EMBL Biorock, an investigation from ESA (European Space Agency), examined how microgravity affects the interaction between rocks and microbes and found little effect on microbial growth. This result suggests that microbial-supported bioproduction and life support systems can perform in reduced gravity such as that on Mars, which would be a perfect place for an epic Halloween celebration.
Preflight fluorescence microscopy image of a biofilm for the Biorock experiment.NASA Keep Exploring Discover More Topics From NASA
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By Space Force
U.S. Space Command formally recognized Germany’s membership in Multinational Force-Operation Olympic Defender.
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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Felipe Valdez, a NASA engineer at Armstrong Flight Research Center’s Dale Reed Subscale Flight Research Laboratory, stands next to a subscale model of the Hybrid Quadrotor (HQ-90) aircraft. NASA / Charles Genaro Vavuris Felipe Valdez is someone who took advantage of every possible opportunity at NASA, working his way from undergraduate intern to his current job as a flight controls engineer.
Born in the United States but raised in Mexico, Valdez faced significant challenges growing up.
“My mom worked long hours, my dad battled addiction, and eventually, school became unaffordable,” Valdez said.
Determined to continue his education, Valdez made the difficult choice to leave his family and return to the U.S. But as a teenager, learning English and adapting to a new environment was a culture shock for him. Despite these changes, his curiosity for subjects such as math and science never wavered.
“As a kid, I’d always been good with numbers and fascinated by how things worked. Engineering combined both,” Valdez said. “This sparked my interest.”
While he pursued an undergraduate degree in mechanical engineering from California State University, Sacramento, guidance from his professor, Jose Granda, proved to be pivotal.
“He encouraged me to apply for a NASA internship,” Valdez said. “He’d actually been a Spanish-language spokesperson for a [space] shuttle mission, so hearing about someone with my background succeed gave me the confidence I needed to take that step.”
Valdez’s hard work paid off – he was selected as a NASA Office of STEM Engagement intern at the agency’s Johnson Space Center in Houston. There, he worked on software development for vehicle dynamics, actuators, and controller models for a space capsule in computer simulations.
“I couldn’t believe it,” Valdez said. “Getting that opportunity changed everything.”
This internship opened the door to a second with NASA this time at the agency’s Armstrong Flight Research Center in California. He had the chance to work on flight computer development for the Preliminary Research Aerodynamic Design to Lower Drag, an experimental flying wing design.
After these experiences, he was later accepted as an intern for NASA’s Pathways Program, a work-study program that offers the possibly of full-time employment at NASA after graduation.
“That was the start of my career at NASA, where my passion for aeronautics really took off,” he said.
Valdez was the first in his family to pursue higher education, earning his bachelor’s degree from Sacramento State and his master’s in mechanical and aerospace engineering from the University of California, Davis.
Today, he works as a NASA flight controls engineer under the Dynamics and Controls branch at Armstrong. Most of his experience has focused on flight simulation development and flight control design, particularly for distributed electric propulsion aircraft.
“It’s rewarding to be part of a group that’s focused on making aviation faster, quieter, and more sustainable,” Valdez said. “As a controls engineer, working on advanced aircraft concepts like distributed electric propulsion allows me design algorithms to directly control multiple motors, enhancing safety, controllability, and stability, while enabling cleaner, and quieter operations that push the boundaries of sustainable aviation.”
Throughout his career, Valdez has remained proud of his heritage. “I feel a strong sense of pride knowing that inclusion is one of our core values, opportunities are within reach for anyone at NASA.”
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Last Updated Oct 13, 2024 EditorJim BankeContactJessica Arreolajessica.arreola@nasa.govLocationArmstrong Flight Research Center Related Terms
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