INSIDE EDITION was with astronaut Buzz Aldrin during his final rehearsal before his debut on the premiere of Dancing with the Stars.
Aldrin, the second man to walk on the moon back in 1969, just turned 80 years old. He's the oldest contestant this season and he is paired with dancer Ashley Costa.
"Not that there's anything wrong with Neil Armstrong, but she's a better companion," joked Aldrin.
Watch a video or our interview with Buzz Aldrin