
When the shuttle Atlantis takes flight later this morning, two self-proclaimed "space geeks" will have a front-row seat to history.
Sara Blask and Todd Seip are two of the winners of NASA's "Tweet-up" contest and they're getting a chance to watch the final shuttle launch at the Kennedy Space Center.
They spoke with CNN's Ali Velshi about what it's like to win the chance to see the last shuttle launch.
As the shuttle Atlantis takes off for the very last time, we're looking back at the legacy of the space shuttle program and the importance of the shuttle program in U.S. history.
Especially for astronauts who have flown in the shuttle, today is a bittersweet day when NASA closes the first chapter in human spaceflight and prepares to start a new one.
Live from Kennedy Space Center this morning, CNN's Ali Velshi talks with Leroy Chiao, an astronaut who flew on three shuttle missions and spent more than six months on the International Space Station. Chiao explains what it feels like to see the last shuttle take off.
Up to one million spectators are expected to attend the final launch of the space shuttle Atlantis on Friday morning. And as the program heads into retirement, NASA plans to transition to the future by keeping an eye on the past. The space agency will be developing a new capsule to take humans into deep space.
CNN's John Zarrella takes a look at what NASA has in store

