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| | Long Duration Spaceflight |
 | | The second space station, Salyut 2, was launched in April 1973; but suffered a catastrophic explosion, which tore the solar panels, the docking apparatus, and the radio transponder from the craft and left it tumbling in a low-Earth orbit. |
 | | From 1982-1986, the Salyut 7 housed 10 crews including 5 principal expeditions lasting 211, 149, 237, 112, 65, and 51 days. |
 | | The Salyut 7 had some improvements over Salyut 6 including hot plates for heating food and continuously available hot water, improved exercise equipment, and better medical facilities. |
| aerospacescholars.jsc.nasa.gov /has/cirr/em/9/3.cfm (1068 words) |
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