announcing the administration's plans for NASA and canceling the non-Orion elements of Constellation, saying that the program was not viable. He instead proposed US$6 billion in additional funding and called for the development of a new heavy-lift rocket program to be ready for construction by 2015 with crewed missions to Mars orbit by the mid-2030s.

On October 11, 2010, President Obama signed into law the NASA Authorization Act of 2010, which included requirements for the immediate