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  • BBC Sky at Night

    CUTTING EDGE

    May 20, 2021 4 minutes

    Clouds over a Martian mountain

    The 1,800km-long weather feature holds a key lesson for research

    The Cloud Appreciation Society was founded in 2005 by British author, Gavin Pretor-Pinney, and now has over 50,000 members around the world. From a wispy cirrus on a summer day to a roiling cumulonimbus threatening a violent storm, the society revels in all meteorological phenomena in Earth’s skies. But many of the other planets in the Solar System have atmospheres, and their clouds bring just as much joy to the scientists studying them.

    The cloud this particular paper focuses on is one found on Mars. Jorge Hernández-Bernal and his team are reporting on a previously unnoticed, extremely long

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