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Discovery reaches ISS

Latest update : 2009-03-18

Discovery, the US space shuttle, successfully docked with the International Space Station delivering two solar panels to the orbiting laboratory. Koichi Wakata became the first Japanese astronaut to land on the ISS.

AFP - The shuttle Discovery docked Tuesday with the International Space Station on a mission to deliver the orbiting lab's first Japanese crewmember and key parts to complete construction of the station.
   
The two vessels linked up at 2119 GMT as they flew over southern Australia, around six minutes behind the estimated docking time but, barring minor communication issues between the ISS and mission control in Houston, without a hitch.
   
During their 13-day mission, the Discovery crew, including Koichi Wakata, who will become the first long-stay Japanese crewmember on the ISS, will install two pairs of solar panels to the space station, one of the last major tasks of the more than decade-long effort to construct the orbiting outpost.
   
Installing the solar panels was to have taken a two-astronaut team four space walks of more than six hours each to complete, according to NASA's original plans.
   
But after lift-off was delayed last week because of a hydrogen leak, the solar panels are now due to be installed during three space walks, the first one set for Thursday, NASA said.
   
The pairs of solar panels contain 32,800 solar cells and measure 35 meters (115 feet) long.
   
Once the full array of solar panels is in place on the space station, they will provide enough electricity to fully power scientific experiments and support an expanded crew of six, due to arrive at the ISS in May.
   
A crew of three -- two Americans and one Russian -- welcomed Discovery when it docked with the ISS.
   
Wakata is replacing US astronaut Sandra Magnus who has spent four months on the ISS. The Japanese crewmember is scheduled to return to Earth in June.
   
Shuttle commander Lee Archambault began maneuvering Discovery into position around an hour before docking, slowly pivoting the massive vessel onto its back to allow the crewmembers on board the ISS to snap photographs of the shuttle's underbelly as it and the space station flew high above South America.
   
"Orbiter looked clean, very nice," ISS commander Mike Fincke told mission control.
   
The photographs were sent back to mission control to be analyzed along with data gathered by the seven-member Discovery crew on Monday in a five-hour series of safety checks of the wings and nose, for which the crew unfurled a long robotic arm mounted with a camera.
   
Checks for damage sustained on lift-off have become standard operating procedure since February 2003, when the Columbia shuttle disintegrated as it re-entered Earth's atmosphere, killing all seven crewmembers.
   
The accident was blamed on a piece of debris that broke off the external tank at launch and struck one of Columbia's wings, gouging a hole into it.
   
When Columbia was just minutes away from touchdown, super-heated air penetrated the aircraft's insulation and burned through the structure of the wing, eventually causing the shuttle to break up.
   
The shuttle program resumed with the first lift-off of Discovery in July 2005.
   
The shuttle that took off on Sunday from Cape Canaveral in Florida was the 36th Discovery mission and the 125th shuttle mission.
   
Launch director Mike Leinbach called the liftoff the "most visually beautiful" he has ever seen.
   
It has been a near picture-perfect mission so far, barring the delayed lift-off, some pesky space rubble that had US and Russian experts braced to move the 100-billion-dollar ISS in an "avoidance maneuver," and a piece of zero-gravity exercise equipment that went on the fritz.
   
The alert over the space junk, believed to be from a Soviet satellite that broke up shortly after it lifted off in 1981, was called off Monday when data showed that the debris posed no danger to the space station.
   
And the astronauts set about cobbling together some low-tech "rubber bungee-type equipment" to allow them to use the broken ergometer and get exercise to help battle the deleterious effects of microgravity on the body.
   
Discovery will return to Earth on March 27, one day after a Russian Soyuz mission takes off for the ISS carrying a crew of three, including US billionaire businessman Charles Simonyi, on his second trip as a space tourist costing him a cool 35 million dollars.
 

Date created : 2009-03-17

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