Arizona's got sky islands in spades. But if you wind your way from the desert floor to the tree tops, that's all you'll find.

Arizona's got sky islands in spades. But if you wind your way from the desert floor to the tree tops, that's all you'll find. But Kitt Peak's got them all beaten with a window beyond the blue.

Kitt Peak and Mount Hopkins, is compared to similar data obtained in 1988 at each site. The current zenith sky brightness in the range ∼3700–6700 Å is essentially identical at the two sites and is as ...

That curiosity led her down her current academic path where she recently spent more than three months at Kitt Peak National Observatory in Arizona as part of a group of astronomers studying the early ...