Described by Capture the Atlas as an "extraordinary milestone," the image One in a Billion, was captured by NASA astronaut ...

When they look at sky brightness—what they call the sky background—they use a unit of brightness per area of the sky: how much light is spread out over a given parcel of celestial real estate.

The rocket's exhaust plume might be illuminated by the setting sun against the backdrop of a darkening sky, possibly providing a viewing opportunity for a large swath of the U.S. West as the ...

Though not officially certified, the park's low light pollution and dramatic basalt cliffs offer an unforgettable night-sky backdrop. Spend your day trudging to the top of the rock along Misery ...

Lancaster’s 4th of July Extravaganza, featuring fireworks set against the backdrop of the desert sky, is scheduled for Thursday at the Antelope Valley Fair and Event Center. Trending ...