An anonymous reader writes: A Russian Proton-M rocket carrying a Mexican satellite broke down shortly after launch and crashed in Siberia. Russian space agency Roscosmos is investigating the incident, but the cause is not yet known. In the video, the rocket appeared to sputter and stop providing thrust when the third-stage engine unexpectedly switched off. Communications were lost with the rocket before that happened. This comes just a couple weeks after Russia experienced another high profile rocket failure when its cargo ship bound for the International Space Station failed to reach a high enough orbit and began spinning out of control. Russia's Proton family of rockets has been in use since the 1960s, though the current Proton-M incarnation was first flown in 2001.