Shuttle launch to go ahead

The shuttle programme manager is quoted here describing the decision to go ahead with today’s scheduled launch of the Space Shuttle Discovery as “an acceptable risk”, but it’s also reported to be going ahead after “members of Nasa’s engineering and safety centre were overruled after 12 hours of debate.” The mission, STS-120, aims to add the Italian-built Harmony module and allow a change of crew on the International Space Station ahead of a planned series of European Space Agency missions to the station – including delivery of the Columbus laboratory. As usual there is launch blog coverage, lift-off due at 4.38pm, and NASA TV live online.