<i id="mwYw"><a href="https://en.wikipedia.org/wiki/Discoverer_1" id="mwZA" rel="mw:WikiLink" title="Discoverer 1">Discoverer 1</a></i>, an American <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Spy_satellite" id="mwZQ" rel="mw:WikiLink" title="Spy satellite">spy satellite</a> that is the first object intended to achieve a <a href="https://en.wikipedia.org/wiki/Polar_orbit" id="mwZg" rel="mw:WikiLink" title="Polar orbit">polar orbit</a>, is launched but fails to achieve orbit.<sup about="#mwt65" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-11"}}' id="cite_ref-11" rel="dc:references" typeof="mw:Extension/ref"><a href="./February_28#cite_note-11" id="mwZw" style="counter-reset: mw-Ref 11;"><span class="mw-reflink-text" id="mwaA">[11]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-11"><cite about="#mwt62" class="citation book cs1" id="CITEREFG.W.A_Drummer1997">G.W.A Drummer (1 January 1997). <a class="external text" href="https://books.google.com/books?id=e35kJYAlyCgC&amp;pg=PA185" id="mwBeY" rel="mw:ExtLink nofollow"><i id="mwBec">Electronic Inventions and Discoveries: Electronics from its earliest beginnings to the present day, Fourth Edition</i></a>. CRC Press. p.<span id="mwBeg" typeof="mw:Entity"> </span>185. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwBek" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwBeo" typeof="mw:Entity"> </span><a href="./Special:BookSources/978-0-7503-0493-1" id="mwBes" rel="mw:WikiLink" title="Special:BookSources/978-0-7503-0493-1"><bdi id="mwBew">978-0-7503-0493-1</bdi></a>. <a class="external text" href="https://web.archive.org/web/20210801133900/https://books.google.com/books?id=e35kJYAlyCgC&amp;pg=PA185" id="mwBe0" rel="mw:ExtLink nofollow">Archived</a> from the original on 1 August 2021<span class="reference-accessdate" id="mwBe4">. Retrieved <span class="nowrap" id="mwBe8">1 August</span> 2021</span>.</cite><span about="#mwt62" class="Z3988" id="mwBfA" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Electronic+Inventions+and+Discoveries%3A+Electronics+from+its+earliest+beginnings+to+the+present+day%2C+Fourth+Edition&amp;rft.pages=185&amp;rft.pub=CRC+Press&amp;rft.date=1997-01-01&amp;rft.isbn=978-0-7503-0493-1&amp;rft.au=G.W.A+Drummer&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3De35kJYAlyCgC%26pg%3DPA185&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AFebruary+28"></span></span>