On a clear, sunny day, the sky above us often glows a brilliant blue, a sight so commonplace that many of us rarely stop to ...

On a distant continent that spans the Pacific on the west and the Atlantic on the east, one can compare the constantly changing moods of the sea and sky. Marvelous colors of the oceans inspire new ...

On Tuesday evening, six planets will line up in the night's sky - Mars, Jupiter, Neptune, Saturn, Uranus and Venus. Best ...