Richard Robert "Ricky" Arnold II (b.1963) is an American astronaut for NASA who flew in space on Space Shuttle Discovery in 2009.
Arnold appeared in a video posted to Sesame Street’s Facebook page on July 9, 2015. He and Ernie sit on the stoop of 123 Sesame Street with a metal NASA briefcase containing Rubber Duckie, who flew in space onboard NASA's Orion crew vehicle during Exploration Flight Test 1 on December 5, 2014. Ernie is pleased to be reunited with him and paraphrases Star Trek: "he's been where no duckie has been before!"