Pluto was discovered at Lowell Observatory in Flagstaff, Arizona in 1930 and was considered our ninth planet until 2006. The International Astronomical Union reclassified Pluto as a dwarf planet ...

A large winter storm bringing snow and rain is hitting Arizona, forcing closures of I-40 in Ash Fork, Kingman and Winslow.

The rest of the country, including parts of the Navajo Nation within Arizona, observes daylight saving time. On Sunday at 2 a ...

PHOENIX – Multiple northern Arizona highways remained closed Friday due to dangerous winter driving conditions. “If you don’t have to travel, it is certainly not recommended,” Paige Konieczny of the ...

Weekend conditions and temperatures statewide look to improve rapidly, with mostly sunny skies and highs in the mid-to upper ...

The center of Arizona is in a small town, which might surprise you. Here's what to know about the center of Arizona and how to find it.

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary ...