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.

TUCSON, Ariz. (13 News)—Kitt Peak National Observatory will celebrate 60 years of public tours on September 27, after a ...

In other news, a bill overhauling Utah's vote-by-mail system has advanced in the legislature. And, a scenic route through ...

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.

The transforming exoplanet that was observed by the WIYN 3.5-meter telescope at the U.S. National Science Foundation Kitt Peak National Observatory has a strangely elongated orbit. Credit: Images and ...

ABSTRACT Recent (1998–1999) absolute spectrophotometry of the night sky over two southern Arizona astronomical sites, Kitt Peak and Mount Hopkins, is compared to similar data obtained in 1988 at each ...

Whistling and moaning, a 50-mile-an-hour (80-kilometer-an-hour) wind whipped among the telescope domes atop Kitt Peak. Just a few feet below, turning gray in the dusk, slid a river of clouds that ...

Discovered in the 18th century, the Helix Nebula, located about 700 light-years away in the constellation Aquarius, belongs ...