human spaceflight

human spaceflight

Van Allen Radiation Belt and Human Space Travel

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Space Shuttle referenced in this video; http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/archives/sts-95.html NOTE - 310 Nautical Miles = 574.1 Kilometers OR 356.7 Miles A field of radiation that surrounds the planet with 25,000 miles in length. No organic unit can go through this field of radiation which as shown here, it was felt about 600 miles away from it. If the ill effects of the Van Allen Radiation Belt were felt 600 miles away from it, what makes you think that you can withstand 25,000 miles of traveling through it? We can send machines; and that's how we got the moon rock pictures etc.. we also send machines to Mars, Saturn and other places. If it’s NOT possible to presently pass through these deadly radiation belts, how was it possible for the Apollo to pass through and land on the moon without any danger to the astronauts in 1969? They didn’t have the technology to do so, as the following article seems to indicate. NASA Launches Radiation Belt Storm Probes Mission http://www.sciencedaily.com/releases/2012/08/120830075008.htm Date: August 30, 2012 Source: NASA Summary: NASA's Radiation Belt Storm Probes (RBSP), the first twin-spacecraft mission designed to explore our planet's radiation belts, launched into the predawn skies at 4:05 a.m. EDT Thursday from Cape Canaveral Air Force Station, Fla. The two satellites, each weighing just less than 1,500 pounds, comprise the first dual-spacecraft mission specifically created to investigate this hazardous regions of near-Earth space, known as the radiation belts. These two belts, named for their discoverer, James Van Allen, encircle the planet and are filled with highly charged particles. The belts are affected by solar storms and coronal mass ejections and sometimes swell dramatically. When this occurs, they can pose dangers to communications, GPS satellites and human spaceflight. To read this article in full -- http://www.sciencedaily.com/releases/2012/08/120830075008.htm Two Years After Launch, NASA’s Van Allen Probes Deliver New Science and Findings http://vanallenprobes.jhuapl.edu/newscenter/newsArticles/20140829.php "In addition to the fundamental scientific knowledge that the Van Allen Probes are providing, the mission is also delivering a wealth of practical information. Some of this will be useful for the design of future spacecraft and their operation in the radiation belts, an area of space that, when very active, can cause severe damage to satellite systems and can harm astronauts. The data collected by the probes will help guide new models and baselines for the effects of radiation on spacecraft and systems." NASA's Van Allen Probes Show How to Accelerate Electrons http://www.nasa.gov/content/goddard/van-allen-probes-shows-how-to-accelerate-electrons/#.VCCCahYa6So "The Van Allen Probes have been able to monitor this acceleration process better than any other spacecraft because it was designed and placed in a special orbit for that purpose," said Mozer. "The mission has provided the first really strong confirmation of what's happening. This is the first time we can truly explain how the electrons are accelerated up to nearly the speed of light." Such knowledge helps with the job of understanding the belts well enough to protect nearby spacecraft and astronauts. Health threat from cosmic rays http://en.wikipedia.org/wiki/Health_threat_from_cosmic_rays "Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favour of fair use."