\<COLOUR 1> SIZE: \<COLOUR 0> Cylinder, 13.3 metres long, 4.3 metres diameter; width across solar arrays 12 metres
\<COLOUR 1> WEIGHT: \<COLOUR 0> 11 tonnes
\<COLOUR 1> COUNTRIES: \<COLOUR 0> USA/Europe
\<COLOUR 1> COMMENTS: \<COLOUR 0> The most advanced optical telescope ever launched into space (on shuttle mission STS-31), the Hubble Space Telescope (HST) has a 2.4-metre diameter mirror; faulty design has limited its resolution, but an in- orbit repair mission is scheduled for 1994.