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The galactic centre region of the Milky Way in Sagittarius setting behind Bow Glacier at the end of Bow Lake, Banff National Park, Alberta, Canada. This was in the deep blue of the start of morning twilight on July 17, 2018 on a very clear night. Saturn is just above the glacier and is the main reflection in the water. (KEYSTONE/SCIENCE PHOTO LIBRARY/Alan Dyer/VWPics/SCIENCE PHOTO LIBRARY)