Author Archives: Ghost News

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””

official news from : https://bit.ly/2QkyIbY Introduction Since 1987, a highly modified McDonnell Douglas DC-8 aircraft has been a workhorse in NASA’s Airborne Science Program (ASP)—see Photo 1. The aircraft, located at NASA’s Armstrong Flight Research Center (AFRC) in California, flew countless missions as a science laboratory, producing science data that supports projects serving the world’sContinue reading “The NASA DC-8 Retires: Reflections on its Contributions to Earth System Science”

official news from : https://bit.ly/2QkyIbY NASA will provide interview opportunities with astronaut Jonny Kim beginning at 9 a.m. EDT, Tuesday, March 18, to highlight his upcoming mission to the International Space Station in April. The virtual interviews from Star City, Russia, will stream live on NASA+. Learn how to watch NASA content through a varietyContinue reading “NASA Astronaut Jonny Kim to Discuss Upcoming Launch, Mission”

official news from : https://bit.ly/2QkyIbY The Discovery A possible “super-Earth” orbits a relatively close, Sun-like star, and could be a habitable world – but one of extreme temperature swings, from scorching heat to deep freeze. Key Facts The newly confirmed planet is the outermost of three detected so far around a star called HD 20794,Continue reading “Discovery Alert: ‘Super-Earth’ Swings from Super-Heated to Super-Chill”

official news from : https://bit.ly/2QkyIbY This was a magical revelation for the Greeks and the Egyptians, who were able to see from the motions of the stars and the way the Sun moved. They saw the way the Sun’s shadow worked in different places. And they figured, well, that’s only possible if the Earth isContinue reading “How Do We Know the Earth Isn’t Flat? We Asked a NASA Expert: Episode 53”