<a class="mw-redirect" href="https://en.wikipedia.org/wiki/Sputnik_9" id="mwAQ4" rel="mw:WikiLink" title="Sputnik 9">Sputnik 9</a> successfully launches, carrying a dog and a human dummy, and demonstrating that the <a href="https://en.wikipedia.org/wiki/Soviet_Union" id="mwAQ8" rel="mw:WikiLink" title="Soviet Union">Soviet Union</a> was ready to begin <a href="https://en.wikipedia.org/wiki/Human_spaceflight" id="mwARA" rel="mw:WikiLink" title="Human spaceflight">human spaceflight</a>.<sup about="#mwt166" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-31"}}' id="cite_ref-31" rel="dc:references" typeof="mw:Extension/ref"><a href="./March_9#cite_note-31" id="mwARE" style="counter-reset: mw-Ref 31;"><span class="mw-reflink-text" id="mwARI">[31]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-31"><cite about="#mwt163" class="citation book cs1" id="CITEREFAngelo2014">Angelo, Joseph A. (2014). <a class="external text" href="https://books.google.com/books?id=OGumSybNfFQC&amp;pg=PA77" id="mwCGg" rel="mw:ExtLink nofollow"><i id="mwCGk">Human Spaceflight</i></a>. Infobase Publishing. p.<span id="mwCGo" typeof="mw:Entity"> </span>77. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwCGs" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwCGw" typeof="mw:Entity"> </span><a href="./Special:BookSources/978-1-4381-0891-9" id="mwCG0" rel="mw:WikiLink" title="Special:BookSources/978-1-4381-0891-9"><bdi id="mwCG4">978-1-4381-0891-9</bdi></a>. <a class="external text" href="https://web.archive.org/web/20220206212525/https://books.google.com/books?id=OGumSybNfFQC&amp;pg=PA77" id="mwCG8" rel="mw:ExtLink nofollow">Archived</a> from the original on 2022-02-06<span class="reference-accessdate" id="mwCHA">. Retrieved <span class="nowrap" id="mwCHE">2020-08-23</span></span>.</cite><span about="#mwt163" class="Z3988" id="mwCHI" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Human+Spaceflight&amp;rft.pages=77&amp;rft.pub=Infobase+Publishing&amp;rft.date=2014&amp;rft.isbn=978-1-4381-0891-9&amp;rft.aulast=Angelo&amp;rft.aufirst=Joseph+A.&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DOGumSybNfFQC%26pg%3DPA77&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AMarch+9"></span></span>