Tag Archives: Nasa

official news from : https://bit.ly/2QkyIbY Exposure to microgravity induces bone atrophy/bone loss which increases circulating calcium, impacting the renal stone risk. Risk mitigation strategies including exercise and hydration are well-defined although the ability to treat a renal stone during exploration missions is not yet available. Directed Acyclic Graph Files + DAG File Information (HSRB Home Page)Continue reading “Risk of Renal Stone Formation”

official news from : https://bit.ly/2QkyIbY Risk is inherent in human spaceflight. However, specific risks can and should be understood, managed, and mitigated to reduce threats posed to astronauts. Risk management in the context of human spaceflight can be viewed as a trade-based system. The relevant evidence in life sciences, medicine, and engineering is tracked andContinue reading “Human System Risk Board”

official news from : https://bit.ly/2QkyIbY Safe, breathable air is essential for crew health. Human spaceflight has involved toxicological events ranging in severity from trivial to life-threatening. Toxic exposure to chemical contaminants can originate from environmental system leaks, payload leaks, pyrolysis of polymeric materials, off-gassing of polymeric materials, use of utility compounds, propellant entry, microbial products,Continue reading “Risk of Toxic Substance Exposure”

official news from : https://bit.ly/2QkyIbY Exposure to altered gravity can cause ocular and brain structural changes to develop during spaceflight; these changes could lead to vision alterations, cognitive effects, or other deleterious health effects. SANS is a syndrome unique to humans that fly in space, and there is no terrestrial disease equivalent. Brain structural changesContinue reading “Risk of Spaceflight Associated Neuro-ocular Syndrome”

official news from : https://bit.ly/2QkyIbY Exposure to the altered gravity in the spaceflight environment may cause physiological changes. One of these changes is the inability to completely empty the bladder or urinary retention. Causes of urinary retention in the early phases of flight include altered baseline physiology seen with exposure to microgravity, the anticholinergic sideContinue reading “Risk of Urinary Retention”

official news from : https://bit.ly/2QkyIbY It is important to protect humans from unintended electrical current flow during spaceflight. The thresholds for contact electrical shock are well established, and standards and requirements exist that minimize the probability of contact electrical shock. Current thresholds were chosen (vs. voltage thresholds) because body impedance varies depending on conditions suchContinue reading “Risk to Crew Health Due to Electrical Shock (Electrical Shock Risk)”

official news from : https://bit.ly/2QkyIbY Spaceflight causes measures of maximum aerobic capacity to decline, which can result in impaired mission task performance. Based on ISS data, if crew adhere to existing exercise schedules and have access to adequate exercise countermeasure systems, then on average, they return with minimal losses of aerobic fitness. New exploration countermeasuresContinue reading “Risk of Reduced Physical Performance Capabilities Due to Reduced Aerobic Capacity (Aerobic Risk)”

official news from : https://bit.ly/2QkyIbY Exposure to the microgravity environment causes muscle size, strength, and endurance to decline. Based on ISS data, if crew adhere to the exercise schedule and have access to adequate exercise countermeasure systems then on average, they return with minimal losses of muscle size, strength, and endurance. New exploration countermeasures systemsContinue reading “Risk of Reduced Physical Performance Capabilities Due to Reduced Muscle Size, Strength, and Endurance (Muscle Risk)”

official news from : https://bit.ly/2QkyIbY Human exploration missions will require robust, flexible Extravehicular Activity (EVA) architecture protocols that include the use of a reduced-pressure cabin atmosphere enabling staged denitrogenation. Use of this atmosphere could result in compromised health and performance to the crewmember due to exposure to mild hypobaric hypoxia; of most concern are theContinue reading “Risk of Reduced Crew Health and Performance Due to Hypoxia”

official news from : https://bit.ly/2QkyIbY Introduction On October 16, 2024, a special session of the NASA Goddard Engage series took place in the Goett Auditorium (Building 3) at NASA’s Goddard Space Flight Center (GSFC). The Engage series is intended to explain work at GSFC in an immersive and nontechnical setting. GSFC’s Office of Communications, EarthContinue reading “Summary of Special Engage Session on “Remote Sensing and the Future of Earth Observations””