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    A new space radiation shield: Flexible boron nitride nanotube film shows promise

    November 21, 2025, Categories  Astronomy/Space

    Blocking space radiation threats with nanotubes! 'Boron nitride nanotube space radiation shield' developed
    Space is an environment exposed not only to primary cosmic radiation but also to secondary radiation, particularly neutrons, which are generated by interactions with spacecraft or the lunar surface and pose significant biological risks. The BNNT liquid crystal-based film demonstrates more efficient space radiation shielding performance than aluminum at the same mass thickness, and is especially effective at attenuating thermal neutrons. Credit: Korea Institute of Science and Technology

    High-energy cosmic radiation damages cells and DNA, causing cancer, and secondary neutrons—generated especially from the planetary surfaces—can be up to 20 times more harmful than other radiations...

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