Headlines > News > Station Crew Participates in Tweetup; Works with Experiments

Station Crew Participates in Tweetup; Works with Experiments

Published by Klaus Schmidt on Thu Oct 22, 2009 6:58 am via: source
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(NASA) – The Expedition 21 crew members completed another busy day aboard the International Space Station, taking part in a Tweetup and working with science experiments Wednesday.

Flight Engineers Nicole Stott and Jeff Williams participated in a long-distance Tweetup as they spoke live with Twitter followers at NASA Headquarters in Washington. A Tweetup is an informal meeting of people who use the social messaging medium Twitter. Williams’ Twitter username is @Astro_Jeff, and Stott’s is @Astro_Nicole.

Flight Engineers Jeff Williams and Nicole Stott talk with Twitter followers on Earth during a Tweetup aboard the International Space Station. Credit: NASA TV

Flight Engineers Jeff Williams and Nicole Stott talk with Twitter followers on Earth during a Tweetup aboard the International Space Station. Credit: NASA TV

Commander Frank De Winne replaced the battery in his wrist-worn Actiwatch. The Actiwatch provides data on the amount of ambient light a crew member is exposed to and the amount of movement produced by the crew member. The data collected from the Actiwatch is used to determine if space travel has an impact on sleep / wake patterns.

Flight Engineer Robert Thirsk and Stott spent time working with the Mice Drawer System (MDS) experiment. MDS studies the effects of microgravity on the bones of genetically altered mice to identify the role of genetic mechanisms in the loss of bone mass in humans and animals as a consequence of long-duration microgravity stays.

Transfer of fuel and supplies from the ISS Progress 35 cargo craft continues aboard the station. Progress 35 docked to the station’s Pirs Docking Compartment at 9:40 p.m. EDT Saturday, delivering 1,918 pounds of propellant, 110 pounds of oxygen and air, 926 pounds of water and 1,750 pounds of spare parts and supplies for the Expedition 21 crew.

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