Firefighters are still unable to contain multiple blazes, as forecasters warn winds could stoke an already "extremely ...

Death Valley National Park offers some of the best stargazing in America, with DarkSky International having designated it as a Gold Tier Dark Sky Park.

The limbs of a giant sycamore tree contrast with a night sky as they rise high above Muskingum Park in Marietta recently. If ...

Chile's Atacama Desert is home to some of the best Earth-based observatories, though an energy company is throwing a wrench ...

The close-up images reveal craters, the floors of which are in permanent shadow, and vast sunlit northern plains.