was launched twelve times
... that the McDonnell Douglas DC-X experimental SSTO rocket was launched twelve times but never flew higher than 3.14 kilometres (1.95 mi)?
... that the <a href="./McDonnell_Douglas_DC-X" id="mwAuo" rel="mw:WikiLink" title="McDonnell Douglas DC-X">McDonnell Douglas <span about="#mwt45" class="nowrap" data-mw='{"parts":[{"template":{"target":{"wt":"nowrap","href":"./Template:Nowrap"},"params":{"1":{"wt":"DC-X"}},"i":0}}]}' id="mwAus" typeof="mw:Transclusion">DC-X</span></a> experimental <a href="./Single-stage-to-orbit" id="mwAuw" rel="mw:WikiLink" title="Single-stage-to-orbit">SSTO</a> rocket <i id="mwAu0">(pictured)</i> <b id="mwAu4"><a href="./List_of_McDonnell_Douglas_DC-X_launches" id="mwAu8" rel="mw:WikiLink" title="List of McDonnell Douglas DC-X launches">was launched twelve times</a></b> but never flew higher than <span about="#mwt44" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"3.14"},"2":{"wt":"km"},"3":{"wt":"mi"}},"i":0}}]}' id="mwAvA" typeof="mw:Transclusion">3.14 kilometres (1.95</span><span about="#mwt44" typeof="mw:Entity"> </span><span about="#mwt44">mi)</span>?