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US shuttle Discovery lifts off on the way to space station

by Staff Writers
Cape Canaveral, Florida (AFP) Aug 29, 2009
The space shuttle Discovery blasted off from the Kennedy Space Center on a 13-day mission to help equip the International Space Station.

Discovery roared into the dark nighttime Florida sky at 11:59 pm Friday (0359 GMT Saturday), as scheduled, and reached orbit a few minutes later.

"I wish you and to your team good luck and godspeed," National Aeronautics and Space Administration launch director Pete Nickolenko told Discovery team leader Rick Sturckow shortly before launch.

"Thanks to everyone for helping us with this mission," Sturckow responded. "Let's go set up the science of the International Space Station."

Preparations for takeoff began earlier Friday with the filling of Discovery's fuel tank -- a process that takes about three hours.

The tank, painted a bright orange color and attached to the outside of the shuttle, is 46.9 meters (154 feet) high -- roughly the same as the Statue of Liberty.

Discovery, and its crew of seven astronauts -- including one Swede -- is to deliver to the ISS equipment for a new bedroom, a treadmill, a freezer, food and other supplies.

It will also be dropping off the newest member of the ISS team -- US astronaut Nicole Stott, who will be taking over from engineer and fellow American Tim Kopra.

Kopra has been aboard the ISS since July and is returning to Earth with the Discovery.

The launch has so far been delayed three times. A first attempt on Tuesday was cancelled shortly before liftoff when weather conditions were deemed too dangerous, and two subsequent attempts were thwarted by problems with a liquid hydrogen fill-and-drain valve.

NASA engineers eventually discovered that the problem was caused by false instrument readings and devised a method of determining if the valve was properly closed in case the instruments malfunction again.

The crew will be delivering to the station 6.8 tonnes of cargo transported in a pressurized module called Leonardo that was built by the Italian space agency.

Two astronauts from the team are scheduled to conduct three spacewalks of six-and-a-half hours each during the 13-day mission, the fourth of five planned for the shuttle this year. The last is scheduled for November.

One of the key goals of the space walks is the replacement of an old liquid ammonia tank, which will be substituted with a new 800 kilogram replacement. The substance is used as a coolant.

The astronauts will also be retrieving experiment equipment from the exterior of the ISS and returning it to Earth for processing.

The Discovery team is delivering a freezer and a treadmill. The freezer will store samples of blood, urine and other materials that will eventually be taken back to Earth for study on the effects of zero-gravity.

The COLBERT treadmill, named after popular US comedy talkshow host Stephen Colbert, will be the second aboard the ISS. Exercise is key for astronauts spending long periods of time in space, where zero-gravity can result in muscle atrophy.

The mission will be the 128th for the space shuttle program, and the 30th mission to the ISS.

Once the Discovery mission is complete, just six more shuttle flights remain before NASA's three shuttles are retired in September 2010.

The International Space Station is a project jointly run by 16 countries at a cost of 100 billion dollars -- largely financed by the United States.

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NASA delays shuttle Discovery launch
Cape Canaveral, Florida (AFP) Aug 27, 2009
NASA on Thursday delayed the launch of the space shuttle Discovery until 0359 GMT Saturday so mission specialists could review tests on a faulty valve, the US space agency said. The decision to make the launch attempt nearly 24 hours later than planned was issued after experts reviewed tests on a liquid hydrogen fill-and-drain valve that malfunctioned earlier in the week in Discovery's main ... read more

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