ISS 'nauts Kelly and Kornienko homeward bound

340 days aloft end in Kazakhstan tonight

Scott Kelly and Mikhail Kornienko mark their 300th day aloft on 21 January. Pic: NASA

'Nauts Scott Kelly and Mikhail Kornienko will wrap 340 days in space tonight when they return to terra firma from the International Space Station.

Kelly and Kornienko will be joined aboard the Soyuz TMA-18M capsule for the return trip to Kazakhstan by cosmonaut Sergey Volkov, who will himself have clocked up 182 days in the heavens.

You can follow the action live on NASA TV. The Eastern Time broadcast schedule is here, and here it is in GMT:

  • 21:15 GMT - Farewell and hatch closure coverage; hatch closure scheduled at 21:40 GMT
  • 00:45 GMT Wednesday - Undocking coverage; undocking scheduled at 01:05 GMT
  • 03:15 GMT - Deorbit burn and landing coverage; deorbit burn scheduled at 03:34 GMT, with landing at 04:27 GMT

The landing is at 10:27 am Kazakhstan time, which is well after sunrise, so hopefully we'll get to enjoy the sight of the Soyuz descending gracefully to Earth under its mighty parachute, as demonstrated in this nice snap of a previous homecoming:

The Soyuz TMA-04M spacecraft is seen as it lands with Expedition 32 Commander Gennady Padalka of Russia, NASA Flight Engineer Joe Acaba and Russian Flight Engineer Sergie Revin in a remote area near the town of Arkalyk, Kazakhstan, on Monday, September 17, 2012. Pic: NASA/Carla Cioffi

Soyuz TMA-04M touches down on 17 September, 2012. Pic: NASA/Carla Cioffi

Kelly and Kornienko's stay on the orbiting outpost was intended to provide detailed information on how the human body reacts to an extended period in space. The former's identical twin Mark Kelly - himself an astronaut - acted as a ground based control. Scientists will consider the comaparative changes in the two brothers' bodies as part of the Twins Study.

Mark and Scott Kelly. Pic: NASA

Mark (right) and Scott Kelly. Pic: NASA

Scott Kelly handed over command of the ISS to fellow NASA astronaut Tim Kopra yesterday. Kopra, with fellow residents Timothy Peake and Yuri Malenchenko, will form Expedition 47, shortly to be joined by Alexey Ovchinin, Oleg Skriprochka and Jeff Williams. The trio are slated to lift off from Baikonur Cosmodrome on 18 March. ®

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