The shuttle blasted off from the Kennedy Space Center here at 4:14 am (0914 GMT).

The Endeavour mission's main goal is the delivery of the Tranquility module, also known as Node 3, which comes with a multi-window cupola attached.

The cupola, built for NASA by the European group Thales Alenia Space in their Turin factory, will allow for panoramic views of Earth, space objects and spacecraft arriving at the ISS, the US space agency said.

With Endeavour's delivery of Tranquility and its cupola, the International Space Station will be 90 percent complete, the National Aeronautics and Space Administration said.

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