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This is an archive article published on June 16, 2007

Hurtling through space

Astronaut Sunita Williams will hitch a ride home on Space Shuttle Atlantis

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During her six-month stay on the International Space Station, astronaut Sunita Williams was orbiting the Earth every 90 minutes at an altitude of 360 km.

The ISS Environmental Control and Life Support System provides or controls elements such as atmospheric pressure, oxygen levels, water, and fire extinguishing, among other things. The Elektron system generates oxygen aboard the station. Williams breathed in oxygen created by electrolysis, which used electricity from the solar panels to split water into hydrogen and oxygen. The water she used was recycled from the sink, shower, urine and condensation inside the station. The ECLSS also filtered and vented into space toxic elements byproducts within the ISS modules.

Williams lived in a constant state of free fall. The station8217;s fast orbit of Earth8212;at 28,100 km per hour8212;put everything and everyone into a weightless state.

When sleeping, she attached herself to the wall. While working, she took the help of materials like Velcro, elastic and tape to keep her instruments from floating away.

Her food came in rehydratable containers and included soups like chicken consommeacute; and cream of mushroom, casseroles like macaroni and cheese and chicken and rice, appetizers like shrimp cocktail, and breakfast foods like scrambled eggs and cereals. She also took samosas along. Breakfast consisted of cereals in rehydratable package with nonfat dry milk and sugar. Williams and the other astronauts added water to the food packages and put them in the oven for around 20 minutes to prepare their meals. Beverages came in powdered form and included coffee, tea, apple cider, orange juice and lemonade.

 

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