This little robot can hop in zero-gravity to explore asteroids 

 A three-legged robot named SpaceHopper could help combat challenges of exploring low-gravity environments, such as asteroids or moons. 

https://cdn.mos.cms.futurecdn.net/y2xkZ6CRCX3oggAbeGjSX6.jpg

https://www.space.com/spacehopper-robot-explore-asteroids-zero-gravity