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July 17th in Astronomy and Space Science
Invention1850The first photograph of a star is taken. J.A. Whipple, a photographer from Massachusetts General Hospital, brings his daguerrotype camera to the Harvard College Observatory and conducts an experiment - photographing the star Vega through the observatory's 15-inch refractor. The inefficient process requires a 100 second exposure and stars of 2nd magnitude or dimmer do not even register.
Manned Spaceflight1975The docking of a American Apollo and a Soviet Soyuz spacecraft marks the first manned space flight conducted jointly by two nations. Joint operations are conducted for two days before the craft separate and return safely to Earth.
Unmanned Spaceflight1988USSR launches the Phobos 1 spacecraft towards Mars. It is accidentally turned off on 2 September 1988, only about 1/10 of the way to Mars.
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