[:ja]Jeff Williams宇宙飛行士がISSから撮影した、とても珍しい夜光雲（やこううん）です。
夜光雲は、夏の高緯度地域（50~70度）の中間圏（地上50~80km）に日の出前や日没後に観測される、地球上で最も高い高度に発生する雲です。
高緯度地域であるスウェーデン・ウプサラの地上で見られた美しい夜光雲はこちらです。
また、直近では、デンマークの写真家Adrien Mauduit氏が美しい夜光雲の動画を撮影しています。
ウェブ地球儀で地球俯瞰画像を見る： LiVEARTH
[Earthview Wonders] No.32: Noctilucent clouds
Amazing noctilucent clouds taken by astronaut Jeff Williams in ISS.
Noctilucent clouds are clouds formed in the mesosphere(50-80km from the ground) during summer of high latitude regions(50-70°) and are often called the highest clouds in Earth’s atmosphere.
This is the amazing noctilucent clouds taken in Uppsala, Sweden.
Further, Danish photographer Adrien Mauduit posted beautiful video of fantastic noctilucent clouds.
See earthview photo gallery with web-globe: LiVEARTH[:en]Amazing noctilucent clouds taken by astronaut Jeff Williams in ISS.
Noctilucent clouds are clouds formed in the mesosphere(50-80km from the ground) during summer of high latitude regions(50-70°) and are often called the highest clouds in Earth’s atmosphere.
This is the amazing noctilucent clouds taken in Uppsala, Sweden.
Further, Danish photographer Adrien Mauduit posted beautiful video of fantastic noctilucent clouds.
See earthview photo gallery with web-globe: LiVEARTH[:]