NASA will announce on Friday where its new Mars rover will land. The original two rovers, Spirit and Opportunity, were sent to different sites in 2003. Spirit sputtered out in March, but Opportunity is still rolling. Both far exceeded their original 3-month missions.
The first two rovers were sent up on a Delta II rocket. The next mission will go on an Atlas V, and the maker of the rockets hopes the same Atlas V will carry the next astronauts into space from U.S. soil. Read more on that here.