Above the great sheath of stars that defines the ship’s keel is a ragged circle of stars. That’s Vela the Sails, though there ...

Yet for all the new data, questions abound. What triggers these bacteria to glow en masse? Why do milky seas mostly occur in specific regions?

Dark sky hunting has become one of the biggest movements in travel, says Alicia Miller. And with International Dark Sky Week ...

Look to the eastern sky, and a clear horizon will show you this unusual, grinning planet alignment thanks to the crescent ...

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