Apollo 11 - Buzz Aldrin EVA practice with seismometer

"Houston, TX -- Apollo 11 LMP, Aldrin, has just deployed the passive seisometer as he will on the surface of the Moon. The instrument will relay seismic information back to Earth for up a year after the Apollo 11 astronauts return to Earth. Models of the LM can be seen in the background".

-- caption for NASA photo No. 69-H-671, release date April 18, 1969.

Done