Soyuz failure probe narrows focus on collision at booster separation

Russian investigators believe a malfunction during separation of the Soyuz rocket’s four liquid-fueled first stage boosters two minutes after liftoff from Kazakhstan led to an emergency landing of a two-man crew heading for the International Space Station, officials said Friday. Speaking to reporters Friday in Moscow, veteran cosmonaut Sergei Krikalev, head of the Russian space agency’s human spaceflight program, said the investigation into Thursday’s launch failure has narrowed on a collision between part of the Soyuz rocket’s first stage and the launcher’s second stage. More

(Source: SpaceFlight Now - Oct 15)