So what does it mean to be a Dark Sky Place ... on the moon went through training in Flagstaff and northern Arizona. Other great spots to observe the night skies and capture stunning photos ...

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

FLAGSTAFF, AZ (AZFamily) — The snow in northern Arizona Monday was a very welcome sight as many popular spots like Flagstaff are on track to be in the top ten driest winters on record.

Key Events: Winter is popular among skiers and snowboarders who congregate at the Arizona Snowbowl to conquer the slopes. Flagstaff has ... (as much as $180 a night).