1970 - 1971
Cosmic  


Several large telescopes begin operations.

Several large telescopes begin operations. With funding from the U.S. National Science Foundation, new optical telescopes enter service at sites with excellent viewing: 157-inch instruments at Kitt Peak, Arizona, (left) and Cerro Tololo, Chile, and an 88-inch unit atop Mauna Kea Volcano, Hawaii. In addition, a radio telescope 300 feet across begins observing near Bonn, Germany. In 1992, Mauna Kea adds a 393-inch multi-mirror telescope.
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