Lesson plan

Progress M-4

Progress M-4 ( ) was a Soviet uncrewed cargo spacecraft which was launched in 1990 to resupply the Mir space station. The twenty-second of sixty four Progress spacecraft to visit Mir, it used the Progress-M 11F615A55 configuration, and had the serial number 204. It carried supplies including food, water and oxygen for the EO-7 crew aboard Mir, as well as equipment for conducting scientific research, and fuel for adjusting the station's orbit and performing manoeuvres. Progress M-4 was launched at 04:00:41 GMT on 15 August 1990, atop a Soyuz-U2 carrier rocket flying from Site 1/5 at the Baikonur Cosmodrome. It docked with the forward port of Mir's Core module at 05:26:13 GMT on 17 August. During the month for which Progress M-4 was docked, Mir was in an orbit of around , inclined at 51.6 degrees. Progress M-4 undocked from Mir at 12:42:43 GMT on 17 September, and was deorbited three days later on 20 September, with the deorbit burn starting at 11:04:27. It burned up in the atmosphere over the Pacific Ocean, with remaining debris landing in the ocean at around 11:42:49.

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Article summary

Progress M-4 ( ) was a Soviet uncrewed cargo spacecraft which was launched in 1990 to resupply the Mir space station. The twenty-second of sixty four Progress spacecraft to visit Mir, it used the Progress-M 11F615A55 configuration, and had the serial number 204. It carried supplies including food, water and oxygen for the EO-7 crew aboard Mir, as well as equipment for conducting scientific research, and fuel for adjusting the station's orbit and performing manoeuvres. Progress M-4 was launched at 04:00:41 GMT on 15 August 1990, atop a Soyuz-U2 carrier rocket flying from Site 1/5 at the Baikonur Cosmodrome. It docked with the forward port of Mir's Core module at 05:26:13 GMT on 17 August. During the month for which Progress M-4 was docked, Mir was in an orbit of around , inclined at 51.6 degrees. Progress M-4 undocked from Mir at 12:42:43 GMT on 17 September, and was deorbited three days later on 20 September, with the deorbit burn starting at 11:04:27. It burned up in the atmosphere over the Pacific Ocean, with remaining debris landing in the ocean at around 11:42:49.

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Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

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Key claims and bibliography are generated from the same tracked claims and sources as the article page.