<a href="https://en.wikipedia.org/wiki/Ranger_program" id="mw8Q" rel="mw:WikiLink" title="Ranger program">Project Ranger</a>: The <a href="https://en.wikipedia.org/wiki/Ranger_8" id="mw8g" rel="mw:WikiLink" title="Ranger 8">Ranger 8</a> probe launches on its mission to photograph the <i id="mw8w"><a href="https://en.wikipedia.org/wiki/Mare_Tranquillitatis" id="mw9A" rel="mw:WikiLink" title="Mare Tranquillitatis">Mare Tranquillitatis</a></i> region of the Moon in preparation for the crewed <a href="https://en.wikipedia.org/wiki/Apollo_program" id="mw9Q" rel="mw:WikiLink" title="Apollo program">Apollo</a> missions. <i id="mw9g">Mare Tranquillitatis</i> or the "Sea of Tranquility" would become the site chosen for the <a href="https://en.wikipedia.org/wiki/Apollo_11" id="mw9w" rel="mw:WikiLink" title="Apollo 11">Apollo 11</a> lunar landing.