History of Space Exploration: Chapter 8, Exercise 2 — Possible Solution
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WHAT THE SOURCE SAYS
The crew spent 23 days aboard Salyut 1. A pressure relief valve malfunctioned
during re-entry, causing a loss of cabin atmosphere. Without pressure suits they
asphyxiated, and the source calls them the only humans to die above the Karman
line.

WHY "DIED IN SPACE" NEEDS CARE
The source ties the loss of atmosphere to re-entry and does not give the height
of the Karman line or where exactly they died. Report the source's wording.