Scotland's skies aglow with rare clouds
Noctilucent clouds have been spotted from Scotland over the past few weeks.
The Met Office says the clouds are extremely rare and form in summer high up in the Earth's atmosphere.
The Latin name means "night shining" and the clouds usually appear bluish or silvery in colour.
They have been seen from the Western Isles, north-east Scotland and the Scottish Borders.
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-bbc