SpaceX Dragon Flight testing is scheduled to complete in the first half of 2019 with the first flight of astronauts, on a mission contracted to NASA, scheduled to occur later the same year. SpaceX's CEO, Elon Musk, named the spacecraft after the 1963 song "Puff, the Magic Dragon" by Peter, Paul and Mary, reportedly as a response to critics who considered his spaceflight projects impossible. SpaceX began developing the Dragon spacecraft in late 2004, making a public announcement in 2006 with a plan of entering service in 2009. Also in 2006, SpaceX won a contract to use the Dragon spacecraft for commercially
Puff, the Magic Dragon at Cornell. He used Yarrow's typewriter to get the poem out of his head. He then forgot about it until years later, when a friend called and told him Yarrow was looking for him, to give him credit for the lyrics. On making contact Yarrow gave Lipton half the songwriting credit, and he still gets royalties from the song. In an effort to be gender-neutral, Yarrow now sings the line "A dragon lives forever, but not so little boys" as "A dragon lives forever, but not so girls and boys." The original poem also had a stanza that was not