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This article is missing an important category of self-righting robots: Space robots.

See the 1999 NASA/JPL paper, "Evolution of Autonomous Self-Righting Behaviors for Articulated Nanorovers," https://trs.jpl.nasa.gov/handle/2014/17585

And "A Hopping Robot for Planetary Exploration," https://www-robotics.jpl.nasa.gov/publications/Matthew_Heverly/Hopping_Robot.pdf

The NASA Mars Pathfinder lander had self-righting features, too. https://mars.nasa.gov/mars-exploration/missions/pathfinder/

The NASA Mars Exploration Rover (MER) had two rovers, /info/en/?search=Mars_Exploration_Rover

I'm sorry that I don't have the time to edit the article on self-righting mechanisms to include these references, but I hope that you other Wiki editors can help.

Kjenks ( talk) 16:28, 11 September 2020 (UTC) reply