thumb|Vostok-2M in Korolyov, Moscow Oblast
thumb|Vostok-2M in Korolyov, Moscow Oblast
Vostok-2M (, GRAU index: 8A92M) was an expendable carrier rocket used by the Soviet Union between 1964 and 1991. Ninety-three were launched, of which one failed. Another was destroyed before launch. It was originally built as a specialised version of the earlier Vostok-2, for injecting lighter payloads into higher Sun-synchronous orbits. It was a member of the R-7 family of rockets, and the last Vostok.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).