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  2. Exploring space is difficult due to various challenges, including123:
    • Cosmic radiation and hazardous environments
    • Space adaptation syndrome (motion sickness)
    • Spatial memory and visual motor performance
    • Bone loss
    • Physiological and psychological impacts of living in zero or low gravity
    • Expensive rocket launches
    • Violent rocket launches
    • Extreme temperatures
    • Micrometeoroids
    • Radiation exposure
    • Lack of maps and rest stops in outer space
    • Moon dust
    • Reliability and technical challenges.
    Learn more:
    Exploration missions that leave the Earth’s protective sphere, however, will have to overcome many challenges, from conditions in space such as cosmic radiation and hazardous environments to human-specific conditions such as space adaptation syndrome (motion sickness), spatial memory, visual motor performance, bone loss, and the physiological and psychological impacts of living in cramped quarters in zero or low gravity.
    www.nasa.gov/headquarters/library/find/bibliograph…

    Space is Difficult

    • It’s Expensive to Get to Space ...
    • Rocket Launches are Extremely Violent ...
    • Space is Incredibly Cold … and Incredibly Hot ...
    www.astrobotic.com/space-is-difficult/

    Here are just a few of the reasons why space is so hard:

    • Propellant volatility. Rocket launches are controlled explosions in the most literal sense. ...
    www.elizabethafrank.com/colliding-worlds/space-i…
     
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  5. WEBFeb 16, 2016 · From space madness to crash landings, here's how we'll beat the 13 most difficult challenges to space exploration.

    • Estimated Reading Time: 7 mins
    • WEBNov 13, 2020 · Radiation risks. Here on terra firma, we’re protected from cosmic radiation by Earth’s magnetic shield, which includes the Van Allen belts. Outside this zone, however, highly charged particles...

    • WEBFormer NASA chief scientist Ellen Stofan and current undersecretary for science and research at the Smithsonian explains why space exploration is so important for humanity. And why it can help us protect our 'pale …

    • WEBNov 10, 2010 · During a three-year mission to Mars, space travellers could lose around 50 per cent of their bone material, which would make it extremely difficult to return to Earth and its gravitational...

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