WASHINGTON As NASA begins to apportion the 5 percent budget cut mandated under sequestration, parts of the U.S. space agency are being asked to cough up more so that others can cough up less or be spared altogether, a senior NASA official told an advisory panel April 4.

NASAs Planetary Science Division, which Congress favored with a $200 million increase in the Full-Year Continuing Appropriations Act of 2013 (H.R. 933) that President Barack Obama signed into law March 26, is expected to lose most if not all of that money as sequestration siphons some $900 million off the agencys enacted $17.5 billion top line.

James Green, NASAs Planetary Science Division director, told members of the NASA Advisory Councils planetary science subcommittee not to expect a straight 5 percent across-the-board cut as the agency rolls its top line back to $16.6 billion, as required under sequestration.

In order to protect higher-priority programs, Green said, NASA will be cutting lower-priority programs, including planetary science, by more than 5 percent. [Planetary Science Takes Budget Hit in 2013 (Infographic)]

We are not a protected program, we are not a high-priority program, Green told his fellow planetary scientists. Consequently, you can assume that [the Planetary Science Divisions reduction] would be higher.

Green did not say which agency programs would be spared, but NASA Administrator Charles Bolden has previously identified the James Webb Space Telescope, the Space Launch System heavy-lift rocketand the Commercial Crew Program as top administration priorities.

The agency had already informed Congress that certain things will be protected, Green said. So we will have a reduced program below the funding Congress has provided.

Congress included $1.39 billion in H.R. 933 for NASAs Planetary Science Division a $200 million increase compared with the $1.19 billion the division was getting under a stopgap spending bill that expired March 27.

The exact amount of funding planetary science will losewill not be known for about a month, when NASA sends Congress its proposed operating plan for the remainder of 2013, Green said.

If planetary science loses too much of the increase it got from Congress, it could spell the end of Greens plan to solicit proposals next year for a Discovery-class mission that would launch around the end of the decade.

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NASA Planetary Science Bracing for Brunt of Sequester Cuts