Now that Atlantis has landed, what's next for NASA?

Atlantis landed safely back on Earth this morning at the Kennedy Space Center, capping NASA's 30-year space shuttle program.

It was a sentimental occasion for the four astronauts who flew the final mission and delivered more than 9,400 pounds of spare parts, equipment and other supplies to the International Space Station.

NASA launched the space shuttle program on April 12, 1981, and has since sent five shuttles on a total of 135 missions, bringing 355 people from 16 countries to space.

Today on American Morning, Leroy Chiao, a former astronaut who has flown on three shuttle missions, joins Ali Velshi and Kiran Chetry to talk about the success of the final mission and to discuss the future of NASA programs and private space travel.