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Soyuz rocket launch in Kazakhstan

15 May 2012 Last updated at 04:40 BST

A Soyuz rocket carrying two Russian cosmonauts and an American astronaut has launched successfully from the Baikonur cosmodrome in Kazakhstan.

Nasa astronaut Joe Acaba and cosmonauts Gennady Padalka and Sergei Revin are scheduled to arrive at the International Space Station on Thursday, where they will join the crew for four months.