- Going Back to Pluto? Scientists to Push for Orbiter Mission http://www.space.com/36697-pluto-orbiter-mission-after-new-horizons.html 15 comments space
- The cancelled Project Orion, a spaceship that would have been powered by exploding nuclear bombs behind it. It was in theory capable of going to Pluto and back in less than one Earth year. http://en.wikipedia.org/wiki/project_orion 385 comments science