Crew Packs Dragon, Works Neuroscience, and Preps for Spacewalk

NASA astronauts Matthew Dominick and Tracy C. Dyson both pose for a fun portrait as Dominick tests portable breathing gear.
NASA astronauts Matthew Dominick and Tracy C. Dyson both pose for a fun portrait as Dominick tests portable breathing gear.

Payload operations are underway aboard the International Space Station as a U.S. cargo craft prepares for its return to Earth at the end of the week. Meanwhile, the Expedition 71 crew continued researching neuroscience and getting ready for the year’s first spacewalk.

The four NASA astronauts in the orbital outpost’s U.S. segment spent the first half of their day packing the SpaceX Dragon spacecraft with science cargo for analysis back on Earth. Flight Engineers Tracy C. Dyson and Matthew Dominick started the day removing research samples from station science freezers and carefully placing them inside Dragon science freezers. Afterward, Flight Engineers Mike Barratt and Jeanette Epps ensured cargo already packed inside Dragon was properly strapped and secured for the flight back to Earth. Dragon is due to undock from the Harmony module’s space-facing port on April 26, weather dependent, and splash down off the coast of Florida the following day.

Afterward, Barratt worked in the Destiny laboratory module and set up a fluorescence microscope then joined Epps and Dominick swapping brain organoid samples inside the optical device. Scientists on the ground remotely operated the specialized microscope viewing the samples to observe the effects of a drug therapy on the brain organoid cultures. Researchers will use the results to study ways protect an astronaut’s central nervous system in microgravity as well as prevent and treat neurological conditions on Earth.

Dyson serviced components and cleaned hardware inside the BioFabrication Facility located in the Columbus laboratory module. The 3D biological printer is being tested for its ability to print organ-like tissues in microgravity potentially enabling space crews to print meals or medicines and allowing doctors to manufacture organs for patients on Earth. Dyson then had her eyes checked as Dominick operated medical imaging gear to view her cornea, retina, and optic nerve.

The next spacewalk at the space station is scheduled for Thursday, April 25. Cosmonauts Oleg Kononenko and Nikolai Chub will exit the Poisk airlock and spend about seven hours configuring hardware and installing experiments on the Roscosmos segment of the space station. The duo spent most of Tuesday reviewing their spacewalk procedures and collecting tools planned for the excursion. The two cosmonauts began the day attaching sensors to themselves measuring their heart activity for a long-running Roscosmos cardiac study.

Flight Engineer Alexander Grebenkin joined his cosmonaut crewmates for the spacewalk procedure reviews on Thursday. He will help the duo in and out of their Orlan spacesuits and monitor the spacewalkers while they work outside the space station.

At the end of the day, Grebenkin joined Dominick, Barratt, and Epps, his SpaceX Dragon Endeavour crewmates, and checked out their Dragon pressure suits and communication systems. The quartet earlier tested a garment that may help crews adjust quicker to the effects of gravity after returning to Earth.


Learn more about station activities by following the space station blog@space_station and @ISS_Research on X, as well as the ISS Facebook and ISS Instagram accounts.

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Neurology Study and Spacewalk Preps Kickoff Week

Astronaut Mike Barratt processes brain organoid samples inside the BioServe Tissue Chamber to learn how microgravity affects the central nervous system.
Astronaut Mike Barratt processes brain organoid samples inside the BioServe Tissue Chamber to learn how microgravity affects the central nervous system.

The Expedition 71 crew kicked off a busy schedule on Monday exploring ways to treat neurological diseases while gearing up for a spacewalk planned for Thursday. Cargo operations are also picking up as a U.S. cargo craft gets ready for its departure from the International Space Station.

Researchers use the orbital outpost’s weightless environment to gain insights impossible to achieve on Earth’s surface. Results extrapolated from the space investigations can be applied not only to promoting living in space for crews but also improving health and industry on Earth for humans.

On Monday, NASA Flight Engineers Tracy C. Dyson and Mike Barratt took turns processing brain organoid samples for a neurodegenerative disorder study. Dyson first serviced the specimens and injected a drug treatment into the sample cultures for a microscopic analysis of the therapy’s ability to counteract the effects of microgravity. Barratt processed the samples at the end of the day preparing them for stowage and later analysis. Doctors will use the results to learn how protect a crew member’s central nervous system and provide treatments for neurodegenerative conditions on Earth.

The duo then joined fellow NASA astronauts Matthew Dominick and Jeanette Epps and helped pack the SpaceX Dragon spacecraft with cargo ahead of its targeted undocking on Friday, April 26. Soon the crewmates will begin concentrating on stowing completed science experiments, including the brain organoid study, and their critical research samples inside Dragon for the ride back to Earth and analysis in laboratories.

Station Commander Oleg Kononenko and Flight Engineer Nikolai Chub are getting ready for the year’s first spacewalk at the orbital lab set to begin at 10:55 a.m. EDT on Thursday. The duo tried on their Orlan spacesuits today checking for pressure leaks and testing their communications and medical systems. The cosmonauts will spend about seven hours in the vacuum of space configuring hardware and installing experiments on the Roscosmos segment of the space station.

Cosmonaut Alexander Grebenkin assisted his cosmonaut crewmates helping the duo in and out of their Orlan spacesuits and checking the suits’ components and batteries. Grebenkin then spent the rest of Monday servicing Roscosmos life support hardware and ventilation systems.


Learn more about station activities by following the space station blog@space_station and @ISS_Research on X, as well as the ISS Facebook and ISS Instagram accounts.

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Biomedical Research, Spacewalk Preps Wrap Week on Station

Cosmonaut Oleg Kononenko inspects the Soyuz MS-09 spacecraft during a spacewalk on Dec. 11, 2018.
Cosmonaut Oleg Kononenko inspects the Soyuz MS-09 spacecraft during a spacewalk on Dec. 11, 2018.

Biomedical duties to understand how space affects the human body and develop ways to treat microgravity-induced conditions were the prime research objectives for the Expedition 71 crew on Friday. The orbital residents also continued loading a U.S. cargo craft for its upcoming departure and preparing for a spacewalk at the International Space Station.

Living long-term in the weightlessness environment creates fluid shifts and blood pressure issues that doctors seek to address and promote crew health. The astronauts use a variety of biomedical tools collect their health data and monitoring how their body adapts to microgravity.

One of the most visible symptoms of living in space is a condition called “puffy face.” This is a result of body fluids moving toward a crew member’s head due to microgravity. Astronauts have reported this condition may also cause internal head and eye pressure affecting vision. A new thigh cuff, similar to a blood pressure cuff, is being tested for its ability to prevent space-caused fluid shifts toward an astronaut’s head. NASA Flight Engineers Matthew Dominick and Jeanette Epps partnered together for that investigation performing chest scans with the Ultrasound 2 device, measuring blood pressure, and conducting eye exams. Doctors are exploring if the thigh cuff can be worn in space to counteract the headward fluid shifts for healthier crews.

NASA Flight Engineer Tracy C. Dyson attached electrodes to herself, wore a sensor-packed cap, and operated a portable ultrasound device on Friday. She was measuring her brain blood flow and blood pressure simultaneously. Scientists are studying how the brain regulates blood flow in weightlessness potentially revealing new therapies for spaceflight-induced and Earthbound blood pressure conditions.

NASA astronaut Mike Barratt spent all day Friday tending to mice living in rodent habitats located in the Destiny laboratory module. He refilled food and water and cleaned the habitats where the mice are being treated with a gene therapy that may improve eye health in space.

All four NASA astronauts will go into the weekend readying the SpaceX Dragon cargo spacecraft for its undocking scheduled for April 26. The quartet has been taking turns all week transferring cargo in and out of Dragon. Next week, the NASA foursome will be making room inside the spacecraft and packing finalized experiments that will be returned to Earth for analysis.

Spacewalk preparations were underway once again in the Roscosmos segment of the orbital laboratory. Cosmonauts Oleg Kononenko and Nikolai Chub checked their Orlan spacesuits for leaks, tested their suits’ communications and medical components, and reviewed procedures to ready the Poisk airlock for their April 25 spacewalk. The duo will exit the station for seven hours of hardware installation work on the Poisk module.

Flight Engineer Alexander Grebenkin joined his Roscosmos crewmates on Friday afternoon for the Poisk airlock procedure reviews. He started his day pedaling on a treadmill for a periodic fitness evaluation. Grebenkin completed his shift after practicing futuristic spacecraft and robotic piloting techniques that may be used on planetary missions.


Learn more about station activities by following the space station blog@space_station and @ISS_Research on X, as well as the ISS Facebook and ISS Instagram accounts.

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Advanced Research and Ongoing Spacewalk Preps Pack Schedule

Cosmonaut Oleg Kononenko is pictured during a spacewalk on Dec. 11, 2018, to inspect the Soyuz MS-09 crew ship.
Cosmonaut Oleg Kononenko is pictured during a spacewalk on Dec. 11, 2018, to inspect the Soyuz MS-09 crew ship. Credit: NASA TV

The Expedition 71 crew had its hands full on Thursday with a multitude of research activities filling the schedule. The orbital septet also continued gearing up for next week’s spacewalk amidst ongoing cargo operations aboard the International Space Station.

Advanced space science is continually taking place aboard the orbital outpost with the experiments being run by astronauts, remotely controlled by researchers on the ground, or autonomously operated. The equipment housing and powering the research also requires constant monitoring and maintenance ensuring high quality results that provide valuable insights into microgravity phenomena.

NASA astronauts Jeanette Epps and Tracy C. Dyson split their schedule on Thursday servicing hardware supporting a pair of different investigations. Epps began her day in the Kibo laboratory module cleaning components and swapping samples inside the Electrostatic Levitation Furnace. The high temperature research device explores the thermophysical properties of materials difficult to observe in Earth’s gravity environment. Next, Dyson set up biomedical hardware she will use on Friday to measure how the brain regulates blood flow in the absence of gravity. Results may lead to new therapies and countermeasures for spaceflight-induced and Earthbound blood pressure conditions.

NASA Flight Engineers Mike Barratt and Matthew Dominick spent their morning supporting two space biology investigations looking at separate but critical phenomena. Barratt attached electrodes to his chest and used an ultrasound device to scan his vascular system with remote guidance from doctors on Earth. The medical data is being used to assess the cardiovascular risk of living in space and is one part of the CIPHER human research study. Dominick swabbed surfaces throughout the station’s U.S. segment collecting microbe samples for analysis. The specimens will be treated on the orbital lab and examined on Earth to determine microbial resistance to antibiotics and the risk to crew health.

Dominick then partnered up with Barratt mid-afternoon testing portable breathing gear. At the end of the day, Dominick joined Dyson and swapped cargo in and out of the SpaceX Dragon spacecraft. Dragon is due to complete its cargo mission and depart the station on April 26. Dyson earlier collected microbe samples for incubation and analysis. Epps wrapped up her shift installing a computer with a camera pointed out a window in the Destiny laboratory module for Earth observations.

Spacewalk preparations have been well underway this week as cosmonauts Oleg Kononenko and Nikolai Chub get ready for a seven-hour excursion to swap hardware outside the space station on April 25. The Roscosmos duo began the day pedaling on an exercise cycle for a pre-spacewalk fitness evaluation. Afterward, the crewmates checked their Orlan spacesuit systems and components inside the Poisk airlock.

Roscosmos Flight Engineer Alexander Grebenkin remained focused on life support maintenance and orbital plumbing tasks in the cosmonaut’s portion of orbital outpost. Later in the afternoon, he participated in the spacewalk preparations staging standard medical equipment and tools in Poisk.


Learn more about station activities by following the space station blog@space_station and @ISS_Research on X, as well as the ISS Facebook and ISS Instagram accounts.

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Crew Works Cargo, Biomedical Ops, and Spacewalk Preps

Astronaut MIke Barratt installs a small satellite orbital deployer inside the Kibo laboratory module's airlock.
Astronaut MIke Barratt installs a small satellite orbital deployer inside the Kibo laboratory module’s airlock.

Cargo operations and spacewalks preparations topped the schedule aboard the International Space Station on Wednesday. The Expedition 71 crew members also worked on biomedical research and reviewed procedures for a simulated emergency.

NASA astronauts Tracy C. Dyson and Mike Barratt kicked off their day swapping cargo in and out of the SpaceX Dragon cargo spacecraft that arrived at the orbital outpost on March 23. Afterward, NASA Flight Engineers Matthew Dominick and Jeanette Epps took over the cargo transfers and wrapped up the work before lunchtime. Dragon is due to undock from the Harmony module’s space-facing port and return to Earth at the end of the month.

The quartet regrouped in the afternoon and participated in a pair of space biology activities to help doctors understand how the human body adapts to weightlessness. First, Barratt operated the Ultrasound 2 device and scanned Dyson’s neck, shoulder, and leg veins as part of regularly scheduled medical checkups. Barratt then joined Dominick and Epps to try on and test a garment that may help crews adjust quicker to the return to Earth’s gravity after a long-term space mission. The threesome then measured the circumference of the waist and right leg during the garment fit check.

Cosmonauts Oleg Kononenko and Nikolai Chub continue preparing for this year’s first spacewalk. The duo from Roscosmos were once again collecting tools, configuring spacesuits, and readying the Poisk airlock for their planned seven-hour spacewalk scheduled for April 25. The pair also took turns during the morning wearing a cap packed with sensors while practicing on a computer futuristic spacecraft and robotic piloting techniques that may be used on planetary missions. Flight Engineer Alexander Grebenkin worked throughout the day servicing a variety of life support hardware and video gear in the space station’s Roscosmos segment.

At the end of the day, all seven orbital residents gathered together and watched a video describing the operation of emergency simulation software. Next, the crewmates familiarized themselves with emergency hardware, such as breathing masks, and procedures, including closing hatches and evacuation paths.


Learn more about station activities by following the space station blog@space_station and @ISS_Research on X, as well as the ISS Facebook and ISS Instagram accounts.

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Space Science and Spacewalk Preps Keep Crew Busy

Astronaut Jeanette Epps smiles for a portrait after she finished conducting a HAM radio session with Italian students.
Astronaut Jeanette Epps smiles for a portrait after she finished conducting a HAM radio session with Italian students.

The Expedition 71 crew members continued ongoing biology and physics research, as well as spacewalk preparations on Tuesday. The seven International Space Station residents also kept up more CubeSat work, cargo operations, and lab maintenance throughout their shifts.

Eye checks were on the schedule Tuesday as NASA Flight Engineers Tracy C. Dyson and Mike Barratt contributed to the CIPHER human research study. The duo participated in a pair of eye exams looking at the retina and optic nerve for one portion of the investigation that examines ocular structure and function in microgravity. Results may inform countermeasures that protect an astronaut’s vision on long-term space missions farther away from Earth.

Dyson earlier replaced cardiac cell samples inside the Advanced Space Experiment Processor, a research incubator, that were printed using the BioFabrication Facility. Barratt installed a small satellite orbital deployer into the Kibo laboratory module’s airlock. The Japanese robotic arm will grapple the deployer and point it away from the station where it will release a series of CubeSats into Earth orbit for scientific and technology research.

NASA Flight Engineers Jeanette Epps and Matthew Dominick joined each other during the afternoon finalizing hardware swaps inside the Cold Atom Lab. During the installation work the duo also cleaned filters and checked power readings on the research device that observes the quantum behavior of atoms chilled to near absolute zero.

Dominick began his day processing blood samples with Dyson spinning them in a centrifuge for later analysis. The duo later took turns transferring cargo in and out of the SpaceX Dragon spacecraft.

Cosmonauts Oleg Kononenko and Nikolai Chub continue preparing for an April 25 spacewalk that will see the Roscosmos duo work outside in the vacuum of space for about seven hours. The two crewmates spent the afternoon gathering spacewalking tools and preparing their Orlan spacesuit components for upcoming operations. During the morning, the pair took turns studying spacecraft and robotic piloting techniques that may be used on future planetary missions.

Roscosmos Flight Engineer Alexander Grebenkin spent the majority of his day servicing life support components inside the Zvezda service module. At the end of the day, Grebenkin moved to the Tranquility module and worked out on the advanced resistive exercise device for an exercise evaluation.


Learn more about station activities by following the space station blog@space_station and @ISS_Research on X, as well as the ISS Facebook and ISS Instagram accounts.

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Advanced Tech and Life Science on Station Today Promoting Health

The Soyuz MS-25 crew ship is pictured docked to the Prichal docking module as the space station soared into an orbital sunset above the Indian Ocean.
The Soyuz MS-25 crew ship is pictured docked to the Prichal docking module as the space station soared into an orbital sunset above the Indian Ocean.

Nanomaterials manufacturing, 3D bioprinting, and astronaut eye health were the main research topics aboard the International Space Station on Friday. The Expedition 71 crew members also continued servicing spacesuits and conducted an emergency drill.

The SpaceX Dragon cargo spacecraft recently delivered to the orbital outpost a biotechnology study to demonstrate the in-space production of nanomaterials that mimic DNA. NASA Flight Engineers Jeanette Epps and Mike Barratt worked on the second portion of that experiment on Thursday mixing then treating the research samples for analysis. Epps began her day mixing solutions in the Life Science Glovebox to create specialized nanomaterials. During the afternoon, Barratt applied sound and light treatments to the samples then stowed them aboard Dragon for analysis back on Earth. Results may lead to advanced therapies for space-caused and Earthbound health conditions.

The duo partnered back together at the end of the day for eye scans using standard medical imaging gear found in an optometrist’s on Earth. Barratt operated the hardware with guidance from doctors on the ground peering into Epp’s eyes and examining her retina and optic nerve for the B Complex eye health investigation.

Cardiac cell printing was back on the schedule on Thursday as NASA Flight Engineer Matthew Dominick operated the BioFabrication Facility located inside the Columbus laboratory module. He swapped sample cassettes inside the bioprinter then processed the printed cell samples for incubation. Results may enable future space crews to print meals and medicines or doctors to manufacture organs and tissues for patients on Earth.

NASA astronaut Tracy C. Dyson joined Roscosmos cosmonauts Oleg Kononenko and Nikolai Chub and practiced a simulated emergency return to Earth. The trio trained on a computer on the steps necessary to quickly enter the Soyuz crew ship and undock from the station for a controlled descent back to Earth.

Next, Dyson spent the rest of her day analyzing microbe samples, conducting a health checkup, and replacing orbital plumbing components. Kononenko and Chub activated a pair of Orlan spacesuits, installed components on the suits, then performed leak checks ahead of a Roscosmos spacewalk planned for April 25.

Flight Engineer Alexander Grebenkin started his day with blood tests then attached electrodes to himself that will monitor his heart activity for 24 hours. Afterward, he worked on Roscosmos life support maintenance before installing imagery hardware to study Earth’s upper atmosphere.


Learn more about station activities by following the space station blog@space_station and @ISS_Research on X, as well as the ISS Facebook and ISS Instagram accounts.

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3D Bioprinting and CubeSats Top Tuesday’s Science Schedule

The Moon's shadow, or umbra, is pictured from the space station as it orbited into the path of the solar eclipse on April 8, 2024.
The Moon’s shadow, or umbra, is pictured from the space station as it orbited into the path of the solar eclipse on April 8, 2024.

Advanced space biology and CubeSat work topped the research schedule aboard the International Space Station on Tuesday. The Expedition 71 crew also continued its cargo work and lab maintenance to keep the orbital outpost in tip-top shape.

Scientists are taking advantage of the weightless environment to learn how to print 3D cardiac tissue samples. NASA Flight Engineers Tracy C. Dyson and Matthew Dominick took turns operating the BioFabrication Facility, swapping cassettes containing the bio-printed samples inside the device, then processing the samples for incubation. The tissue-engineering study that takes place inside the Columbus laboratory module may offer the ability to print food and medicines for future space crews. Results may also enable the bioprinting of replacement organs and tissues potentially alleviating the shortage of donor organs on Earth.

NASA Flight Engineer Jeanette Epps was on her second day of installing a small satellite orbital deployer inside the Kibo laboratory module’s airlock. Three CubeSats are packed into the device and will soon be deployed into Earth orbit for a variety of communications and technology studies. Afterward, Epps partnered with Dyson and NASA astronaut Mike Barratt transferring cargo in and out of the SpaceX Dragon cargo spacecraft.

Barratt began his day transferring spacewalking tools to the station’s Roscosmos segment before working on orbital plumbing duties. During the afternoon, the three-time station resident refilled the water supply inside the rodent research habitat located in the Destiny laboratory module. The mice living inside the biology device are being observed for a study testing a gene therapy to improve eye health in space.

Cosmonaut Nikolai Chub collected and stowed the spacewalking tools from Barratt. Those tools are being readied for a Roscosmos spacewalk planned for April 25. Afterward, he worked on life support tasks inside the Progress 86 resupply ship and the Zarya and Zvezda modules.

Fellow cosmonaut Alexander Grebenkin inspected video gear and an oxygen generator then scanned surfaces inside Zvezda with an ultrasound device. Station Commander Oleg Kononenko continued inspection activities inside Zvezda and the Progress 87 resupply ship. He also attached sensors and electrodes to himself and jogged on a treadmill for a periodic fitness test.


Learn more about station activities by following the space station blog@space_station and @ISS_Research on X, as well as the ISS Facebook and ISS Instagram accounts.

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Station Orbits into Eclipse, Crew Works Research and Spacesuits

The Moon's shadow, or umbra, on Earth was visible from the space station as it orbited into the path of the solar eclipse over southeastern Canada.
The Moon’s shadow, or umbra, on Earth was visible from the space station as it orbited into the path of the solar eclipse over southeastern Canada.

The International Space Station soared into the Moon’s shadow during the solar eclipse on Monday afternoon. The Expedition 71 crew members had an opportunity to view the shadow at the end of their workday filled with cargo transfers, spacesuit maintenance, and microgravity research.

The windows on the cupola, the orbital outpost’s “window to the world,” were open and NASA Flight Engineers Matthew Dominick and Jeanette Epps were inside photographing and videotaping the Moon’s shadow on Earth, or umbra, beneath them. They were orbiting 260 miles above southeastern Canada as the Moon’s umbra was moving from New York state into Newfoundland.

The space station experienced a totality of about 90% during its flyover period. Views of the solar eclipse itself, the Moon orbiting directly between the sun and the Earth, were only accessible through a pair of windows in the space station’s Roscosmos segment which may not have been accessible due to cargo constraints.

Before the eclipse activities began on Monday, Dominick worked on orbital plumbing, serviced a pair of science freezers and swapped cargo in and out of the SpaceX Dragon spacecraft. Dominick then joined NASA astronaut Mike Barratt inspecting spacesuit tethers and organizing spacewalking tools.

Epps installed a small satellite orbital deployer inside the Kibo laboratory module’s airlock and also participated in the Dragon cargo work. NASA Flight Engineer Tracy C. Dyson assisted Epps with the small satellite installations and cargo transfers. Dyson also reviewed operations with the BioFabrication Facility and prepared research hardware for an upcoming session to print cardiac tissue cell samples.

Station Commander Oleg Kononenko spent Monday on inspection tasks in the aft end of the Zvezda service module and Progress 87 resupply ship. Flight Engineer Nikolai Chub focused his attention on electronics and ventilation maintenance. Chub also spent a few moments assisting Flight Engineer Alexander Grebenkin as he attached sensors to himself measuring his heart activity for a long-running Roscosmos space cardiac investigation. He later turned on an ultrasound device and scanned surfaces inside Zvezda.

Space Health Tops Station Research Schedule on Thursday

NASA astronauts (from left) Mike Barratt, Matthew Dominick, and Jeanette Epps enjoy breakfast inside the International Space Station's Unity Module.
NASA astronauts (from left) Mike Barratt, Matthew Dominick, and Jeanette Epps enjoy breakfast inside the International Space Station’s Unity Module.

Brand new science is underway at the International Space Station with two new crews and a cargo ship arriving in March to replenish the Expedition 70 crew. The orbital residents explored a variety of space health technologies and more on Thursday.

NASA Flight Engineer Tracy C. Dyson, who is on her third spaceflight, worked in the Columbus laboratory module swapping hardware for a new experiment seeking to demonstrate 3D printing of antimicrobial parts in space. The investigation named Copper Anti-Microbial Prints, or CAMP, is examining the effectiveness of producing medical devices on-demand and how microgravity affects their anti-microbial properties.

NASA Flight Engineer Loral O’Hara processed messenger RNA (mRNA) and protein samples in the Life Science Glovebox for an experiment, recently delivered aboard the SpaceX Dragon cargo craft, to investigate nanomaterials that mimic DNA. The study, called DNA Nano Therapeutics-Demo 2, is exploring space-manufactured DNA nanomaterials in order to produce therapeutics that may benefit travelers in space and humans on Earth.

One space-caused phenomenon that concerns researchers is the headward fluid shifts that occur in astronauts. Once in space, a crewmember’s body fluids begin to flow upward affecting their eye structure and vision. Another more visible result is commonly called “puffy face.” NASA astronauts Matthew Dominick and Jeanette Epps partnered together Thursday afternoon and tested a specialized thigh cuff that may counteract these fluid shifts. Dominick wore the cuff on his leg and took ultrasound scans with assistance from Epps and doctors on Earth. Results may also impact treatments for fluid accumulations caused by Earth-bound conditions.

NASA astronaut Mike Barratt spent his day on space biology participating in the CIPHER suite of 14 human research studies. He participated in a series of cognition and robotics tests then collected his blood and urine samples for analysis. Results from the expansive investigation may provide scientists insights into the physiological and psychological effects of living in space long-term.

Roscosmos cosmonaut Oleg Novitskiy and Belarus spaceflight participant Marina Vasilevskaya, along with Dyson, are in their first week aboard the orbital outpost. Novitskiy and Vasilevskaya will return to Earth on April 6 bringing home O’Hara who has been aboard the station since Sept. 15. Dyson will stay in space until early fall.

Novitskiy joined his fellow cosmonauts Oleg Kononenko and Nikolai Chub and replaced hardware components inside the Soyuz MS-24 and MS-25 crew ships. Chub then teamed up with new cosmonaut Alexander Grebenkin and studied blood flow and cell respiration for a Roscosmos life science study. Vasilevskaya, with assistance from Chub, recorded her heart rate and tested a specialized suit’s theorized ability to help a crew member readjust to Earth’s gravity.


Learn more about station activities by following the space station blog@space_station and @ISS_Research on X, as well as the ISS Facebook and ISS Instagram accounts.

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