The Space Race NASA’s Giant Inflatable Balls! (declassified) Posted: April 1, 2025 | Last updated: April 1, 2025 When landing on Mars was nearly impossible, NASA engineers invented giant ...

Unlike the much bigger fitness balls, which you can lie back on and ... How to use it: This is a kind of inflatable step machine that you step up and down on to work your leg muscles.

A 30-foot-high inflatable version of the planet Mars, part of an exhibit at the Kennedy Center in Washington, D.C., rolled ...