 Among the Czech leak, four cosmonauts perished in doomed launches. Alexey Lidovsky, Andrey Matkov, Sergei Shiborin, and Maria Gromova. The possibility that these unfortunate men and women may still be floating in the cold of deep space, their capsules having become their tombs, is a deeply disturbing one. But some extraordinary evidence that emerged from Italy appeared to support this unsettling prospect.