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Welcome back inside the International
Space Station Flight Control Room.

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That again was some video of
NASA astronaut Don Pettit working

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on the Biological Experiment
Laboratory, or Biolab,

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which is currently located in
the European Columbus module.

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That was a multiuser research facility
used to perform space biology experiments

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on microorganisms, and also
cells in tissue cultures,

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and small plants and small invertebrates.

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This is all being done to help scientists
gain a better understanding of the effects

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of microgravity and space
radiation on biological organisms.

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The crew continuing to move throughout their
day and down to a three-man Expedition 31 crew

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since the departure of former
Expedition 30 Commander Dan Burbank

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and two Russian cosmonauts Anton Shkaplerov
and Anatoly Ivanishin late last week.

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You can see the three of
them here on their departure.

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Expedition 31 formally began and command was
handed over to Russian cosmonaut Oleg Kononenko.

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Our current station residents seen here
with NASA astronaut Don Pettit on the left,

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and Commander Kononenko in the middle and
European Space Agency astronaut Andre Kuipers

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on the right have been onboard
the station since December 23

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and are formally beginning their first
week as the Expedition 31 crew today.

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They will be joined just two weeks from now

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by the remaining three members
of, crew members of Expedition 31.

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Starting on the left, you have
Joseph Acaba a NASA astronaut,

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in the middle Russian cosmonaut Gennady
Padalka who will be on his fourth spaceflight

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and will take over command of the station once
Expedition 32 begins in, after the departure

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of Pettit, Kononenko and
Kuipers late in May, or in July.

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And also the third astronaut that
will launch that is part of that crew

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on the far right there is Sergei
Revin another Russian cosmonaut.

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Once they launch they will bring the total count
of astronauts onboard the station back up to six