NASA postpones last shuttle mission to November

April 27, 2010
Space shuttle Endeavour stands on launch pad 39A at NASA's Kennedy Space Center February 2010 in Cape Canaveral, Florida. NASA has pushed to November the launch of one of its three remaining shuttle missions to modify an experiment module to be attached to the International Space Station (ISS).

NASA has pushed to November the launch of one of its three remaining shuttle missions to modify an experiment module to be attached to the International Space Station (ISS).

Shuttle Endeavour, which had been scheduled to lift off July 29, will now launch "no earlier than mid-November 2010" so that scientists can upgrade a magnet in the Alpha Magnetic Spectrometer program to a longer-lasting device, the US space agency said late Monday on its website.

"This will take advantage of NASA's plan to extend station operations until at least 2020," the agency said.

The Endeavour rescheduling does not affect the next launch, of shuttle Atlantis, due to blast off from Florida's Kennedy Space Center on May 14.

"The payload for the (Atlantis) flight, an integrated cargo carrier and a Russian-built mini research module, was installed in the shuttle's cargo bay Sunday," NASA said.

The final shuttle mission had been scheduled for September 16, with Discovery flying a last resupply machine to the orbital outpost. Discovery was still slated for its September 16 launch, "but managers will continue to assess its readiness for flight and make changes as appropriate," NASA said.

The is mothballing its program this year, and once the three shuttles are retired the United States will rely on Russia to take astronauts to the station aboard three-seater until a new fleet of commercial space taxis is operational.

A successor to the Discovery is scheduled to take off no earlier than 2015.

By the time the final three missions are complete, the space shuttles -- characterized by NASA as the most advanced machines ever built -- will have flown 134 missions into orbit.

US President announced in February he wanted to see the life of the ISS extended for at least another five years beyond its 2015 end date.

The ISS, a joint project involving 16 countries, has cost around 100 billion dollars, mostly funded by the United States.

The Alpha Magnetic Spectrometer -- a project led by Nobel laureate Samuel Ting of the Massachusetts Institute of Technology -- will be installed on the ISS to help study and shed light on how the universe was formed, and search for evidence of dark matter and anti-matter by measuring cosmic rays.

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