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Endeavour launches from Florida Shuttle makes final night flight
(10 minutes later)
The US space agency (Nasa) has launched its shuttle Endeavour on a mission to the International Space Station (ISS). The US space shuttle has made its final night launch from the Kennedy Space Center in Florida.
Endeavour soared up into the sky at 0914, making a small piece of history by becoming the last shuttle to launch in darkness. The Endeavour orbiter soared into the Florida sky on a 13-day mission to the International Space Station (ISS).
It will be delivering a connecting unit and a large bay window to the space station. It is delivering a connecting node and a large window module in what will be one of the last ISS assembly flights.
Sunday's attempt at a lift-off was thwarted by thick, low cloud over the Kennedy Space Center. The US space agency (Nasa) plans just four further shuttle missions after this one - and all of them are planned to launch in daylight hours.
Monday's blast-off occurred at 0414 local time (0914 GMT), 24 hours behind schedule. Endeavour should have left Earth on Sunday but was held on the pad because of a thick layer of cloud blanketing Florida's Space Coast.
NODE 3 - 'TRANQUILITY' Key unit connects and helps manage other ISS modulesMultiple docking ports for visiting vehicles or future modules7m by 4.6m; a mass of 14 tonnes, but will be fitted out in orbitSophisticated life support systems will include air cleaning unitCupola to be fixed to an Earth-facing port once in orbitPanoramic views provide ideal control room for robotic armNamed after Sea of Tranquility, the Apollo 11 landing site
Endeavour's mission is an important moment for the European Space Agency's (Esa) contribution to the station project. Both the new modules were manufactured in Italy by Thales Alenia Space.
Node 3, also known as Tranquility, will house the station's core life-support systems.
It will also store a treadmill the crew must use regularly to exercise their bodies and maintain bone density.
One of the risks of living in microgravity conditions is that bones tend to lose strength over time.
The Cupola is an observation tower that will be used to control robots working on the exterior of the platform.
It is constructed in the shape of a dome, with six trapezoidal side windows and a circular top window of a little under 80cm, making it the largest window ever built for space.
The Cupola is travelling into orbit attached to the end cone of Node 3 but once in orbit will be transferred to a berthing point that looks straight down to Earth.
The spectacular views from the Cupola mean it is likely to become a popular place on the station for astronauts to relax.
Esa's project manager on Node 3 and the Cupola, Philippe Deloo, told the BBC: "I heard that on orbit the most favourite past-time of the crew when they're off duty is to watch out the window and look at Earth.
"The psychological effect of being able to look outside, to look at the Mother Earth, is something that has long been put forward as an argument to have windows on the station."
Endeavour's crew is commanded by George Zamka, a colonel in the US Marine Corps, and includes the British-born mission specialist Nicholas Patrick.
Dr Patrick will conduct the three spacewalks to install the two modules with colleague Bob Behnken.
The Cupola will afford spectacular views of Earth
Jonathan.Amos-INTERNET@bbc.co.uk