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August 11th in Astronomy and Space Science
Discovery1877American astronomer Asaph Hall discovers Mars' smaller moon Deimos while observing Mars at the U.S. Naval Observatory in Washington D.C. He would find the larger moon, Phobos, six nights later.
Manned Spaceflight1962USSR launches the Vostok 3 spacecraft with cosmonaut Andrian Nikolayev. Pavel Popovich is launched the next day in Vostok 4. The two craft approach within 3 miles of each other, but the rendezvous is due entirely to launch trajectory, as neither spacecraft is able to maneuver in orbit.
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