<a href="https://en.wikipedia.org/wiki/Viking_program" id="mwARY" rel="mw:WikiLink" title="Viking program">Viking program</a>: <a href="https://en.wikipedia.org/wiki/NASA" id="mwARc" rel="mw:WikiLink" title="NASA">NASA</a> launches the <i id="mwARg"><a href="https://en.wikipedia.org/wiki/Viking_1" id="mwARk" rel="mw:WikiLink" title="Viking 1">Viking 1</a></i> planetary probe toward <a href="https://en.wikipedia.org/wiki/Mars" id="mwARo" rel="mw:WikiLink" title="Mars">Mars</a>.