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.

The Falcon 9 launched 23 Starlink satellites from Vandenberg Space Force Base in California just after 6 p.m. Arizona residents could see the satellite streak across the night sky and shared their ...

Monument Valley, straddling the Arizona-Utah border, is an iconic symbol of the American West. Its towering sandstone buttes ...

Arizona has some of the prettiest sunsets, but why? There's a science behind it. Here's what to know, including sunset times and spots to see it.

Three people have died while plummeting from the sky in a matter of weeks ... several people have died while skydiving over the Arizona desert. In two incidents — one on Jan. 24 and another ...

and boasts incredibly clear night skies. Few cities have as strong a space legacy as Flagstaff, Arizona. This high-elevation mountain town — no, Arizona isn’t all desert — is where Pluto was ...