<a href="https://en.wikipedia.org/wiki/Space_Shuttle_Challenger" id="mw9g" rel="mw:WikiLink" title="Space Shuttle Challenger">Space Shuttle <i id="mw9w">Challenger</i></a> lifts off for mission <a href="https://en.wikipedia.org/wiki/STS-61-A" id="mw-A" rel="mw:WikiLink" title="STS-61-A">STS-61-A</a>, its final successful mission.