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This is Mission Control Houston.

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Looking at the space station flight control
room at the Johnson Space Center in Houston

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where a team of flight controllers are
on duty, helping the Expedition 30 crew

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through a day focused on science and maintenance
onboard the International Space Station.

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Flight Engineers Andre Kuipers and Don
Pettit began their day with some tests

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of their reaction time in order
to monitor the effects of fatigue,

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while flight engineers Anton Shkaplerov and
Anatoly Ivanishin measured their body masses

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and observed for distribution of fluids.

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Later on in the day Pettit
did the VO2max experiment,

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which is measuring his oxygen
uptake during exercise.

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All of those are part of the ongoing
human life sciences research to find

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out how prolonged experienced
microgravity impacts the human body.

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Other science work done today included
taking measurements of the amount of methane

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and carbon dioxide in the Earth's atmosphere.

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Flight Engineer Oleg Kononenko was at
the controls for that Russian experiment.

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Later in the day he also took
some microbial air samplings

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of the atmosphere inside the space station.

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For Commander Dan Burbank good portion
of his day was spent in the Quest airlock

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where he was setting up and
then executing a protocol

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to scrub the cooling loops
of two of the spacesuits.

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The EMU or Extravehicular Mobility Unit,
the spacesuits that are worn for spacewalks

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that are conducted in the US
section the space station.

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Those spacesuits have cooling systems in
order to keep the astronauts inside them

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at a comfortable temperature, and then
during the times when the suits are not used

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over an extended period of time, they
require some maintenance to make sure

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that the loops remain clear of any debris.

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All of the crew members had time during
the day today at some part to take part

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in the daily cleaning activities also
as regular maintenance of the station.

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Burbank, Kuipers and Pettit spent some time just
after their lunch today discussing the mission

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in an interview with the Weather
Channel, and late in the day Burbank

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and Kuipers performed routine eye examinations
that are part of an ongoing effort to learn more

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about how human bodies respond, change, during
long stretches of time away from gravity.

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On Thursday morning the team in
Mission Control begin planning

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for a possible debris avoidance maneuver,

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which if necessary was scheduled
to take place on Friday morning.

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The trajectory operations officers
are watching a piece of debris

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from the Iridium 33 communications satellite
that might pass close by the station

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on two consecutive orbits on Friday afternoon.

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Due to some unusual drag conditions and
solar activity and atmospheric density,

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the teams are developing a debris
avoidance maneuver plan as a precaution.

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If that maneuver is necessary it would
be executed some time on Friday morning

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at approximately 10:20 a.m. central time.

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Also on the schedule for the crew on Friday.

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Kuipers has a ham radio opportunity
to talk to students in Belgium.

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Crew members will continue
preparing the Progress ship

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for departure later this
month while continuing to work