The American <i id="mwAU8"><a href="https://en.wikipedia.org/wiki/Viking_1" id="mwAVA" rel="mw:WikiLink" title="Viking 1">Viking 1</a></i> lander successfully lands on <a href="https://en.wikipedia.org/wiki/Mars" id="mwAVE" rel="mw:WikiLink" title="Mars">Mars</a>.<sup about="#mwt48" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-8"}}' id="cite_ref-8" rel="dc:references" typeof="mw:Extension/ref"><a href="./July_20#cite_note-8" id="mwAVI" style="counter-reset: mw-Ref 8;"><span class="mw-reflink-text" id="mwAVM">[8]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-8"><cite about="#mwt45" class="citation book cs1" id="CITEREFLang2011">Lang, Kenneth R. (3 March 2011). <a class="external text" href="https://books.google.com/books?id=S4xDhVCxAQIC&amp;pg=PA255" id="mwB0o" rel="mw:ExtLink nofollow"><i id="mwB0s">The Cambridge Guide to the Solar System</i></a>. Cambridge University Press. p.<span id="mwB0w" typeof="mw:Entity"> </span>255. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwB00" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwB04" typeof="mw:Entity"> </span><a href="./Special:BookSources/978-1-139-49417-5" id="mwB08" rel="mw:WikiLink" title="Special:BookSources/978-1-139-49417-5"><bdi id="mwB1A">978-1-139-49417-5</bdi></a>.</cite><span about="#mwt45" class="Z3988" id="mwB1E" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=The+Cambridge+Guide+to+the+Solar+System&amp;rft.pages=255&amp;rft.pub=Cambridge+University+Press&amp;rft.date=2011-03-03&amp;rft.isbn=978-1-139-49417-5&amp;rft.aulast=Lang&amp;rft.aufirst=Kenneth+R.&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DS4xDhVCxAQIC%26pg%3DPA255&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AJuly+20"></span></span>