In spite of the Challenger and Columbia disasters, the US Space Shuttle,
which entered service in 1981, remains the most successful spacecraft
ever developed. Conceived and designed as a reusable spacecraft to
provide cheap access to low Earth orbit, and to supersede expendable
launch vehicles, serving as the National Space Transportation System, it
now coexists with a new range of commercial rockets. David Harland's
definitive work on the Space Shuttle explains the scientific
contribution the Space Shuttle has made to the international space
programme, detailing missions to Mir, Hubble and more recently its role
in the assembly of the International Space Station. This substantial
revision to existing chapters and extension of 'The Space Shuttle',
following the loss of Columbia, will include a comprehensive account of
the run-up to resumption of operations and conclude with a chapter
beyond the Shuttle, looking at possible future concepts for a partly or
totally reusable space vehicle which are being considered to replace the
Shuttle.