<a href="https://en.wikipedia.org/wiki/Space_Shuttle_Discovery" id="mwARc" rel="mw:WikiLink" title="Space Shuttle Discovery">Space Shuttle <i id="mwARg">Discovery</i></a> launches on <a href="https://en.wikipedia.org/wiki/STS-51-D" id="mwARk" rel="mw:WikiLink" title="STS-51-D">STS-51D</a> to deploy two <a href="https://en.wikipedia.org/wiki/Communications_satellite" id="mwARo" rel="mw:WikiLink" title="Communications satellite">communications satellites</a>.<sup about="#mwt102" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-17"}}' id="cite_ref-17" rel="dc:references" typeof="mw:Extension/ref"><a href="./April_12#cite_note-17" id="mwARs" style="counter-reset: mw-Ref 17;"><span class="mw-reflink-text" id="mwARw">[17]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-17"><cite about="#mwt99" class="citation web cs1" id="mwB9s"><a class="external text" href="http://spacefacts.de/mission/english/sts-51d.htm" id="mwB9w" rel="mw:ExtLink nofollow">"STS-51D"</a>. <i id="mwB90">Spacefacts</i><span class="reference-accessdate" id="mwB94">. Retrieved <span class="nowrap" id="mwB98">February 26,</span> 2014</span>.</cite><span about="#mwt99" class="Z3988" id="mwB-A" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=Spacefacts&amp;rft.atitle=STS-51D&amp;rft_id=http%3A%2F%2Fspacefacts.de%2Fmission%2Fenglish%2Fsts-51d.htm&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AApril+12"></span></span>