Dogecoin is a cryptocurrency created by software engineers Billy Markus and Jackson Palmer, who decided to create a payment system as a joke, making fun of the wild speculation in cryptocurrencies at the time. On May 9, 2021, SpaceX announced a rideshare mission doge1 to the Moon completely funded by Dogecoin, thus becoming the first space mission funded by a cryptocurrency. Elon Musk confirmed this news via Twitter.