The <a href="https://en.wikipedia.org/wiki/Mars_7" id="mwASA" rel="mw:WikiLink" title="Mars 7">Mars 7</a> Flyby bus releases the descent module too early, missing Mars.<sup about="#mwt176" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-33"}}' id="cite_ref-33" rel="dc:references" typeof="mw:Extension/ref"><a href="./March_9#cite_note-33" id="mwASE" style="counter-reset: mw-Ref 33;"><span class="mw-reflink-text" id="mwASI">[33]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-33"><cite about="#mwt173" class="citation book cs1" id="CITEREFHarland2001">Harland, David M. (2001). <a class="external text" href="https://books.google.com/books?id=KE3mp3r1bEcC&amp;pg=PA415" id="mwCH8" rel="mw:ExtLink nofollow"><i id="mwCIA">The Earth in Context: A Guide to the Solar System</i></a>. Springer Science &amp; Business Media. p.<span id="mwCIE" typeof="mw:Entity"> </span>415. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwCII" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwCIM" typeof="mw:Entity"> </span><a href="./Special:BookSources/978-1-85233-375-1" id="mwCIQ" rel="mw:WikiLink" title="Special:BookSources/978-1-85233-375-1"><bdi id="mwCIU">978-1-85233-375-1</bdi></a>. <a class="external text" href="https://web.archive.org/web/20220309143025/https://books.google.com/books?id=KE3mp3r1bEcC&amp;pg=PA415" id="mwCIY" rel="mw:ExtLink nofollow">Archived</a> from the original on 2022-03-09<span class="reference-accessdate" id="mwCIc">. Retrieved <span class="nowrap" id="mwCIg">2020-08-23</span></span>.</cite><span about="#mwt173" class="Z3988" id="mwCIk" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=The+Earth+in+Context%3A+A+Guide+to+the+Solar+System&amp;rft.pages=415&amp;rft.pub=Springer+Science+%26+Business+Media&amp;rft.date=2001&amp;rft.isbn=978-1-85233-375-1&amp;rft.aulast=Harland&amp;rft.aufirst=David+M.&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DKE3mp3r1bEcC%26pg%3DPA415&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AMarch+9"></span></span>