Category Archives: Uncategorized

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 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”

official news from : https://bit.ly/2QkyIbY Shortly after dawn on March 27, 2001, NASA pilot Bill Rieke took off from an airfield just outside of Phoenix in NASA’s blue-and-white Learjet 25 and flew low over a series of microphones for the first flight test of a groundbreaking NASA technology. On one of the plane’s engines wasContinue reading “NASA’s Chevron Technology Quiets the Skies”