<a href="https://en.wikipedia.org/wiki/Viking_program" id="mwAS0" rel="mw:WikiLink" title="Viking program">Viking program</a>: The American <i id="mwAS4"><a href="https://en.wikipedia.org/wiki/Viking_2" id="mwAS8" rel="mw:WikiLink" title="Viking 2">Viking 2</a></i> spacecraft lands at <a href="https://en.wikipedia.org/wiki/Utopia_Planitia" id="mwATA" rel="mw:WikiLink" title="Utopia Planitia">Utopia Planitia</a> on <a href="https://en.wikipedia.org/wiki/Mars" id="mwATE" rel="mw:WikiLink" title="Mars">Mars</a>.