However, the proposed budget does include some increases for space technology development and human space exploration, the U.S. Office of Management of Budget said Monday.
The total proposed budget is $17.7 billion, a decrease of 0.3 percent from the 2012 enacted level.
Astronomical observatories and robotic solar system explorers, including the James Webb Space Telescope -- successor to the Hubble telescope -- and a mission to return samples from an asteroid are funded in the proposed budget.
The budget retains funding for the development of a new heavy-lift rocket and crew capsule for human space exploration
Also in the budget is money to re-purpose NASA's former space shuttle launch facilities at the Kennedy Space Center in Florida into a launch complex to efficiently support programs such as the Space Launch System and commercial operators.