However, NASA have previously insisted the rocket which is the largest since Saturn V, is the only thing capable of going into deep space.
There have been many calls for SLS to scrapped and the funding to be redirected into another NASA project.
Other options for the money include science and exploration mission in the Solar System as opposed to just one rocket launch.
Jonathan Goff, President and CEO of startup Altius Space Machines said: “I was really surprised and impressed that Administrator Bridenstine made this announcement.
“I think this is a big deal, especially if they can pull it off.”