Articles tagged with Astronauts
A team of researchers characterized different bacterial populations isolated from the International Space Station's potable water system, exploring their functional properties and long-term interactions. The study aimed to improve microbial risk assessments for human-built environments in space and on Earth.
Researchers at the University of Rochester found that lunar samples do not show signs of magnetization from a magnetic shield. The lack of magnetization suggests that the moon has never had a prolonged dynamo field. Without this protection, solar wind implanted volatiles like helium 3 in the lunar soil.
Researchers found that space travel perturbs human physiology, leading to weaker immune responses and increased susceptibility to infections. The study suggests that T regulator cells (Tregs) play a key role in the weakening of an astronaut's immune system during space travel.
Scientists have discovered a clear pattern in extreme space weather events, making it possible to predict when they will occur. The findings suggest that Moon missions may be delayed to avoid the most intense periods of solar activity, which can pose risks to astronauts and satellites.
Researchers developed a non-intrusive Bio-Monitor shirt to track astronauts' health during spaceflight, providing continuous measurements of heart rate, breathing rate, and physical activity. The study found significant reductions in physical activity during spaceflight, highlighting the potential for early warning systems.
Researchers found continuous declines in positive emotions among astronauts at two Antarctic stations, without a bounce-back effect after returning home. Positive emotions such as satisfaction and enthusiasm are crucial for thriving in high-pressure settings, and interventions targeting these may reduce psychological risk.
A team of engineers is building a fridge that can operate in zero gravity and different orientations, providing astronauts with access to longer-lasting and more nutritious food. The fridge aims to extend the shelf life of canned and dried food from three years to five to six years.
Researchers at UT Southwestern found that astronaut Scott Kelly's heart lost an average of 0.74 grams per week during his nearly a year-long stay in space. Despite regular exercise, the heart adapted relatively well and functioned well despite shrinking by about three-tenths of an ounce.
Research in simulated weightlessness found cognitive speed initially declined but remained unchanged, while emotion recognition worsened over time. Astronauts' ability to read emotional expressions may be impaired in long space missions, impacting teamwork and mission success.
The study analyzed 39 variants of lunar human landers, considering key architectural decisions such as number of stages and propellant type. The analysis showed that expendable systems with 2-stage architecture are advantageous, but reusable vehicles with 1-stage or 3-stage systems offer comparable advantages.
A researcher is working on a project funded by NASA to understand how the skeleton senses and responds to forces, with the goal of keeping astronauts' bones strong during long periods in space. The study aims to develop strategies to restore healthy bone dynamics, which can be disrupted by disuse and lack of gravity.
Space radiation poses significant risks to astronaut cardiovascular health, including myocardial remodeling, atherosclerosis, and inflammation. Research highlights the potential of antioxidant treatments, such as vitamin C and spinach, to protect astronauts from space-induced damage.
Astronauts on long-duration missions face nutrient deficiencies from dehydrated food; Ying Diao's research uses wearable sensors to monitor plant stress and optimize growth conditions. The technology has potential applications beyond space exploration, including addressing climate change by helping plants adapt to changing environments.
Fruit flies exposed to microgravity for three weeks showed profound changes to their hearts, including smaller size and reduced contractility. These findings suggest that astronauts may benefit from protective measures to keep their hearts healthy during long-duration space travel.
Researchers studied the effects of long-duration space flight on telomere length and DNA damage in a group of 10 astronauts, finding evidence of oxidative stress and individual differences in responses. The study suggests that telomeres may be affected by chronic oxidative stress during spaceflight.
A mathematical model reveals human spaceflight reduces exercise tolerance and ages astronauts' hearts, with features similar to accelerated aging. Understanding 0G configuration is crucial for ensuring astronaut health in future missions to the Moon and Mars.
Scientists from Chinese and German institutions report on time-resolved measurements of lunar surface radiation, revealing an equivalent dose rate of about 60 microsieverts per hour. This poses considerable exposure for humans, highlighting the need for shielding during long-term moon stays.
A team at the University of Colorado Boulder developed a possible fix for the problem of spring cleaning on the moon: using an electron beam to zap away dust. The technology has shown promise in removing fine dust particles from surfaces, with an average cleaning power of 75-85%.
Researchers studied sleep patterns of astronauts before, during and after spaceflight to find that they slept an average of only 5.7 hours in space, with a 17.7% reduction in sleep efficiency. Sleep architecture also changed, with decreases in non-REM and REM sleep.
The project aims to develop advanced compression space suits designed to protect astronauts from physical strains in space missions. The technology is also transferable to medical applications for burns, sports injuries, lymphedema, osteoporosis, and cerebral palsy.
Researchers at the University of Reading found that calculating the speed of coronal mass ejections (CMEs) when they hit Earth provides more useful early warnings for satellite operators. This allows them to take evasive action or switch off systems to protect against radiation damage, and warn astronauts of potential threats.
Researchers found that four bacteria species can survive and multiply on a minimal diet of nitrogen, phosphorus, and other essential elements from space. This adaptation process makes them less virulent, but still poses a risk to astronauts' immune systems during space travel.
A study published by King's College London found that spaceflight and combined oral contraceptive pill use do not increase the risk of venous thromboembolism in female astronauts. The research looked at 38 flights between 2000 and 2014 and proposed more frequent blood tests during astronaut selection and training.
NASA scientists have developed a new seismometer system called SUBLIME to measure moonquakes and map the Moon's interior. The system will alert astronauts to seismic events and provide an early-warning system, with the long-term goal of establishing a network of seismic stations.
A team at Colorado State University used a novel approach to test assumptions in NASA's model predicting health risks from space radiation. They found that the risk exceeds what is considered acceptable, highlighting the need for further research and validation.
A new study found that long-duration space travel can cause expansions in the brain's white matter and combined brain and cerebrospinal fluid volumes. The researchers also observed alterations to the pituitary gland, a pea-sized structure at the base of the skull, suggesting elevated intracranial pressure during spaceflight.
Scientists discovered a new way to analyze lunar soil using atom probe tomography, allowing them to identify products of space weathering, pure iron, water, and helium. This technique can help researchers learn more about conditions on the Moon's surface and formation of precious resources.
A team of researchers discovered a case of stagnant blood flow resulting in a clot in the internal jugular vein of an astronaut on the International Space Station. The study found that anticoagulation therapy was effective in reducing the size of the clot, but not eliminating it entirely.
A US astronaut on the International Space Station developed a deep vein thrombosis, prompting UNC expert Stephan Moll to consult and develop a treatment plan. Moll advised on using Enoxaparin and Apixaban to effectively treat the blood clot, which was successfully managed over 90 days.
A study investigated eye changes in astronauts during long space missions and those experiencing simulated weightlessness from 30 days of bed rest. The results showed similarities between the two conditions, providing new insights into spaceflight's effects on vision.
Researchers at Université de Montrêl are working on a new way to measure the mechanics of the human eye to protect astronauts from adverse impacts of space travel on their vision. The team has developed a non-invasive technology that can identify astronauts at risk of developing ocular damage before they go into space.
The Kennedy Uplink Station is a critical component of NASA's Launch Communications Segment, providing uplink and downlink communications between Artemis astronauts and mission controllers. The segment has reduced costs and simplified operations, enabling NASA to save tens of millions of dollars in operating costs over its lifetime.
Researchers suggest that exercising before, during, and after treatment, like NASA astronauts, could reduce muscle mass loss, bone demineralization, and heart problems. Cancer patients may benefit from a similar routine to counteract long-term side effects of treatments.
A new coating technology being tested on the International Space Station has shown promise in reducing electrical charges that can damage spacecraft electronics. The coating, developed using atomic layer deposition, could also help make spacesuits more conductive and reduce lunar dust's electrostatic charge.
A new study found that long-duration space missions change brain structure and function in NASA astronauts, correlating with declines in motor skills and cognitive performance. Researchers hope to better understand the effects of microgravity on the human brain to improve astronaut safety.
A team of researchers from UMass Amherst created a mathematical model to predict the degradation of vitamins in spaceflight food over time. The model enables NASA to accurately schedule resupplying trips and provide astronauts with essential nutrients, particularly thiamine, which degrades rapidly in certain foods like beef.
The authors argue that space agencies should prioritize field geology training for all astronauts, including those with advanced degrees in geology. Developing new science operations strategies using emerging technologies will optimize mission productivity and unlock the full potential of scientific research on the Moon, Mars, and beyond.
A study found that microgravity impacts brain connectivity in cosmonauts, changing sensorimotor functions like movement and body position perception. The brain develops an auxiliary system relying on visual and tactile feedback to compensate for limited vestibular input.
Research found that mice exposed to low-dose radiation for six months experienced impaired cellular signaling, leading to learning and memory problems and increased anxiety behaviors. The study highlights the need for safety measures to protect astronauts' brains during deep space missions.
Researchers found that astronauts who exercised in space and received IV fluids upon landing were not prone to dizziness or fainting on Earth. The study's results could lead to medical advances for people with conditions like postural orthostatic tachycardia syndrome (POTS) on our planet.
A new study from UT Southwestern Medical Center found that exercise regimens during space flight, followed by saline injections after landing, can prevent orthostatic intolerance in astronauts. The condition is also diagnosed in patients as Postural Orthostatic Tachycardia Syndrome (POTS), causing debilitating dizziness.
Long-term spaceflight causes significant changes to gene expression, immune system, and DNA repair systems. The study provides insights into the effects of prolonged space travel on astronaut health and may help scientists develop treatments or prevention strategies.
Research from the NASA Twins Study found that extended spaceflight alters the ratio of two major categories of bacteria in the gut microbiome, but not its diversity. The study's findings could help protect astronauts' and space tourists' microbiomes during long bouts of space travel.
Scientists found no long-lasting, major differences between astronaut Scott Kelly's epigenome and his twin brother Mark's after a year in space. The study suggests that research on additional astronauts may help predict medical risks on long space journeys.
Researchers tested a silver- and ruthenium-based coating on the International Space Station, finding it highly effective in reducing bacteria growth by up to 80% compared to bare steel. The AGXX® coating may provide a solution to combating antibiotic-resistant superbugs in deep space missions.
NASA research finds that dormant viruses reactivate in over half of crew members on Space Shuttle and International Space Station missions. The reactivation rate increases with spaceflight duration, raising concerns for the success of deep-space missions. Effective prevention and treatment are crucial to safeguarding astronauts.
Researchers are investigating ways to conduct meaningful science and send valuable information back to Earth in the harsh Martian environment. Scientists have simulated mission conditions using basalt samples from Idaho and Hawaii, seeking clues to the ongoing search for life on Mars.
Researchers at Northwestern University are developing a predictive model to help NASA assemble ideal teams for the Mission to Mars. The study, conducted in two analog environments, reveals that crews experience diminished abilities to think creatively and solve problems, with successful task completion rates between 20-60%.
Researchers at MUSC sound the alarm about hydrocephalus associated with long-term spaceflight (HALS), a brain condition that affects astronauts during extended space missions. The study, published in JAMA Neurology, highlights the need for more research into HALS to understand its effects on the human brain and develop countermeasures.
A new study found that prolonged spaceflights can impair natural killer cell function in astronauts, increasing the risk of cancer and viral reactivation. The effects are more pronounced in first-time astronauts, suggesting stress or age may play a role.
A team of researchers led by Michigan State University's George Mias will use molecular signatures to detect illnesses before they happen in astronauts. By monitoring an individual's wellness baseline and detecting early patterns of deviation, the team aims to provide treatment in advance of any outward symptoms.
A study of 17 astronauts found that long-duration spaceflight reduces paraspinal muscle size by 4.6-8.8% and increases fatty tissue content, with some changes persisting for up to four years after returning to Earth.
Researchers discovered that bacteria on the ISS are adapting to survive in a stressful environment, rather than evolving into superbugs. The study's findings provide good news for astronauts and potential space tourists, but also highlight the need for precautions against illness transmission.
A joint ESA-University of Bath project aims to estimate forces experienced by lower limbs in different gravity environments, mapping variation in external loads, muscle strength, and reduced gravity effect.
Researchers at NTNU are developing self-contained planters to allow astronauts to grow food in space. The goal is to provide fresh produce for long-duration missions like those to Mars and beyond. By growing plants directly in water with dissolved nutrients, fertilization and irrigation can be controlled precisely.
A new study reveals spaceflight has limited impact on B-cell immunity, a crucial part of the immune system. Astronauts living on the International Space Station for 6 months showed unaffected B-cell immune competency, suggesting in-flight vaccine-based countermeasures may be effective.
A study of Russian cosmonauts reveals that space travel alters the brain's tissue volume, particularly in grey and cerebrospinal fluid areas. Changes persist for at least six months after returning to Earth, with potential implications for cognition and vision.
Exposure to energetic heavy ions from deep space radiation impairs intestinal epithelial cell migration and triggers senescent signaling. This effect persists for at least a year after exposure, suggesting potential adverse impacts on astronaut GI function and health.
A new procedure harnessing ultrasound technology to reposition kidney stones is being tested in emergency patients at UW Medicine's Harborview Medical Center and University Center. The approach could benefit astronauts as well as Earth-side patients, providing quick relief and avoiding unnecessary pain medications.
A team of astronauts working together for months in a confined space will be critical to Mars mission success. The psychology of teamwork is crucial, with characteristics such as emotional stability, agreeability, and resilience being key factors.