Spin.

An article: https://www.hortidaily.com/article/9752159/

The apparent source: https://www.orius.co/blog/gravilab-the-gravity-simulator-designed-by-orius

All good, all nice, all, of course, supported; Test the systems that you must send to at least LEO for the actual work.

A point, however, needs be made for those who concentrate on other domains: To actually test reduced gravity effects (not to pre-test the tools that need be used for those tests), the testing can not be done while sitting in a full gravity well. 1G negates reduced gravity simulation.

Would you like to know more? Some background right here from SSI: https://ssi.org/programs/ssi-g-lab-project/

And the image at the top of this? Because recently another vault was opened and thousands of “lost” historicals were rediscovered, a picture of our scanning something originally created and used by that fascinating guy who pondered this stuff a lot, Gerard Kitchen O’Neill.