With one rocket launch, aerospace startup bluShift just achieved two firsts. Not only was its Stardust 1.0 the first rocket to lift off from the startup's home state of Maine, but it was also the first commercial rocket anywhere to get its power from a biofuel. Now that the startup has proven that its biofuel rocket can fly, a future of more sustainable space flight could be just on the horizon. What Is Biofuel? It takes a lot of thrust to send a rocket hurtling toward space, and most rockets generate that power by burning fossil fuels. That means that every time SpaceX or NASA sends a rocket into space, they're also pumping more carbon emissions into the atmosphere.