Three boulders balancing like ballerinas have been spotted on the surface of a comet by the Rosetta spacecraft. Only a small area on the surface of each rock is touching the ground, similar to "balancing rocks" seen on Earth.
Three boulders balancing like ballerinas have been spotted on the surface of a comet by the Rosetta spacecraft. Only a small area on the surface of each rock is touching the ground, similar to "balancing rocks" seen on Earth.