Only Three People Have Died in Space
On 29 June 1971, the three cosmonauts loaded scientific specimens, films, tapes, and other gear into Soyuz 11, then transferred manual control back from Salyut 1 to Soyuz 11 and returned to their ferry craft. Undocking occurred at 18:28 GMT. Soyuz 11 flew co-orbit for a while before it retro-fired at 22:35 GMT in preparation for re-entry. Before re-entering Earth’s atmosphere, both the work compartment and the service module were routinely jettisoned. This occurred at about 22:47 GMT, when radio communications abruptly ended when the work compartment separated, well before the normal ionospheric blackout.
More people have died in the pursuit of spaceflight, but only the crew of Soyuz 11 was exposed to the environment above the Karman Line (and yes, I erroneously called it the von Karman line in the video since that was his name!).