Kitt Peak also played a part in the initial dark-energy discovery in 1998. Some of the preliminary measurements that led to that stunning breakthrough were made using telescopes at the observatory ...

Located on 200 acres of the Tohono O'odham Reservation about 55 miles southwest of Tucson, Kitt Peak National Observatory was created with the approval of and an agreement signed by the nation ...

This image was taken by telescope from Kitt Peak National Observatory near Tucson, Arizona. Photograph courtesy T. Rector (University of Alaska Anchorage), Z. Levay and L. Frattare ...