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 was chosen specifically as the observatory's site because of its accessibility, low light pollution, atmospheric conditions, and high altitude to capture infrared.

Ten students from high schools on or near the San Carlos Apache Reservation are participating in a nine-week summer ...

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 ...

O By Sraddha P. Helfrich. n Oct. 10, just two days before Columbus Day, the University Board of Regents will ponder whether to participate in one of the most culturally and socially divisive programs ...

Mount Graham is marking its 30th anniversary as an international observatory, while LBT celebrates its 15th since first light. Whipple turns 55, and KPNO will be celebrating its 65th birthday as ...

Much of Consolmagno's source material comes from observations made atop the 10,700-foot Mount Graham at an observatory known as the Pope Scope, operated by the University of Arizona, the Vatican ...

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 ...