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The Geomagnetism Program first established an observatory near Tucson in 1910 on what is now Morris K. Udall Regional Park. The current site, in the Saguaro National Park , was installed in 1996.
The Geomagnetism Program first established an observatory near Tucson in 1910 on what is now Morris K. Udall Regional Park. The current site, in the Saguaro National Park , was installed in 1996.
The Geomagnetism Program first established an observatory near Tucson in 1910 on what is now Morris K. Udall Regional Park. The current site, in the Saguaro National Park , was installed in 1996.
The Geomagnetism Program first established an observatory near Tucson in 1910 on what is now Morris K. Udall Regional Park. The current site, in the Saguaro National Park , was installed in 1996.