Elmo the Elmonaut tells kids about astronomy

Sesame Street's Elmo appeared today at the Smithsonian's National Air and Space Museum in Washington to introduce a show that helps children learn about astronomy, The Associated Press reports. "This is one small step for a monster and one giant leap for monsterkind," Elmo declared to the delight of kids at the museum. Dressed in a space suit, he dubbed himself an Elmonaut.