Comet Hitchhiker

"Instead of a thumb, our idea is to use a harpoon and a tether."

NASA scientists have designed the concept of a spacecraft that would hitch rides on comets and asteroids by spearing them with tethers.

"Instead of a thumb, our idea is to use a harpoon and a tether."

NASA scientists have designed the concept of a spacecraft that would hitch rides on comets and asteroids by spearing them with tethers.