Tours of Mount Graham International Observatory will begin May 20 and run on Saturdays through late Oct. The tours are operated by Eastern Arizona College's Discovery Park Campus in Safford.

Mount Graham is a hulking mass of rock and forest rising from Arizona’s desert floor more than a mile and a half into an infinite sky. The Western Apache call it Dził nchaa si’an, which ...

You can see how they work for yourself with a tour. The Mount Graham International Observatory holds three powerful telescopes, including the famed Large Binocular Telescope Interferometer ...

Firefighters battling the Frye Fire on the north side of Mount Graham worked Saturday and through the night to improve 15 miles of control lines to protect Mount Graham International Observatory ...

There are tours nearly every weekend in summer and fall to the Mount Graham International Observatory, which sits atop the Pinaleño Mountains of southeastern Arizona. Space on the tours is ...

threatening to engulf the Mount Graham International Observatory. Join NPR's Joe Palca and guests for an update on the fires, and the telescopes at Mount Graham.

University police arrested five protesters for interrupting a Board of Regents meeting Friday, delaying it for an hour as they called on the University to end its involvement in the controversial ...

The Faculty Senate report states: “On ethical, material, political and cultural grounds, we cannot afford to join the MGIO (The Mount Graham International Observatory) project.” The American Indian ...

(Check each observatory’s web site for the latest information on when they will reopen.) Mount Graham is marking its 30th anniversary as an international observatory, while LBT celebrates its ...

The UA's Mount Graham International Observatory is getting a new communication antenna to replace the one that's more than 10 years old. The new 40-foot mono-pole will offer scientists higher ...

The telescopes at the Mount Graham International Observatory peer into the heavens, seeking drama miles up in the sky. These days, though, the drama is much -- much -- closer to home. A ...