<i><a href="//commons.wikimedia.org/wiki/Apollo_11" title="Apollo 11">Apollo 11</a></i> Lunar Module Pilot <a href="https://en.wikipedia.org/wiki/Buzz_Aldrin" class="extiw" title="w:Buzz Aldrin">Buzz Aldrin</a>'s bootprint. Aldrin photographed this bootprint about an hour into their lunar extra-vehicular activity on July 20, 1969, as part of investigations into the soil mechanics of the lunar surface. This photo would later become synonymous with humankind's venture into space.
NASA / <a href="https://en.wikipedia.org/wiki/Buzz_Aldrin" class="extiw" title="w:Buzz Aldrin">Buzz Aldrin</a>
1969-07-20
NASA (<a rel="nofollow" class="external text" href="http://grin.hq.nasa.gov/ABSTRACTS/GPN-2001-000014.html">original upload</a>;  <a rel="nofollow" class="external text" href="http://www.hq.nasa.gov/alsj/a11/images11.html#5877">ALSJ (AS11-40-5877)</a>)