{
  "id": "enwiki-001347418899",
  "slug": "progress-21",
  "title": "Progress 21",
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  "lead": "Progress 21 ( ) was a Soviet uncrewed Progress cargo spacecraft, which was launched in May 1984 to resupply the Salyut 7 space station.",
  "body": "Progress 21 ( ) was a Soviet uncrewed Progress cargo spacecraft, which was launched in May 1984 to resupply the Salyut 7 space station. ==Launch== Progress 21 launched on 7 May 1984 from the Baikonur Cosmodrome in the Kazakh SSR. It used a Soyuz-U rocket. ==Docking== Progress 21 docked with the aft port of Salyut 7 on 10 May 1984 at 00:10 UTC, and was undocked on 26 May 1984 at 09:41 UTC. ==Decay== It remained in orbit until 26 May 1984, when it was deorbited. The deorbit burn occurred at 15:00:30 UTC, with the mission ending at around 15:45 UTC. ==See also== 1984 in spaceflight List of Progress missions List of uncrewed spaceflights to Salyut space stations ==References==",
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    "title": "Progress 21",
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    "publisher": "Anticloud FZ LLE",
    "publisher-place": "Dubai, United Arab Emirates",
    "URL": "https://encyclopegia.org/a/progress-21",
    "issued": {
      "date-parts": [
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          2026,
          11,
          11
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    "license": "CC BY-SA 4.0",
    "DOI": "eo1:enwiki-001347418899",
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