Bright blue-white noctilucent clouds danced over the town of Nykøbing Mors in Denmark just before dawn, just when this spectacular photo was taken. Night sky photographer Ruslan Merzlyakov ...

The idea of a red sky at night used to invoke beautiful images of vibrant sunsets, the product of warm sunlight bathing the sky near the horizon. The adage of “red sky at night, sailor’s delight” ...

said Masi. “I’m always excited to admire the beauty of the night sky,” he said, especially when it features a blue supermoon. Follow Boston.com on Instagram (Opens in a New Tab) Follow ...