Like this 1965 photo of the Reduced Gravity Walking
Simulator, via Wired
Science.
The man is in this photo is wearing a
special pressurized spacesuit to help scientists study “the lunar walking
problem” by analyzing the phsyiological [sic] effects of reduced gravity on
walking, running, jumping, fatigue limits, energy expenditure and speed.
The Simulator was described in a 1964 paper titled
“Discussion of Existing and Planned Simulators for Space Research”:
When the astronauts land on the moon
they will be in an unfamiliar environment involving, particularly, a
gravitational field only one-sixth as strong as on earth. A novel method of
simulating lunar gravity has been developed and is supported by a puppet-type
suspension system at the end of a long pendulum. A floor is provided at the
proper angle so that one-sixth of the subject’s weight is supported by the
floor with the remainder being supported by the suspension system.
Moon day
may be over, but our celebration doesn’t have to be. See also this slideshow of other Oddities
From NASA's Massive Image Archive
Image Source: NASA