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.

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 ...

That realization came through an apparently remarkable coincidence: One of the key Apache leaders in the unsuccessful fight against the Mount Graham observatory, Wendsler Nosie Sr., will be on ...

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 ...

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 ...

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 ...

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 ...

From afar, the dome of the MMT Observatory atop Mount Hopkins strikes a regal profile. It lies 90 miles (145 km) southwest of Mount Graham and 45 miles (75 km) southeast of Kitt Peak, sitting ...

That's how the Vatican Observatory Foundation established a presence east of Tucson on Mt. Graham. By 1993, the Vatican had a telescope of its own, thanks to the U of A's Mirror Lab and a new ...