The Bad Astronomer
writes "The White House released its proposed NASA budget for FY13, and while much of it remains the same from last year, one particular program got devastating news: Mars exploration got a crippling $226 million cut, more than 38% of its budget. This means killing two future missions outright and threatening others. The reasons for this are complex, including huge cost overruns on James Webb Space Telescope and the Curiosity Mars rover, but it also points to a political lack of valuing science in America."
A followup to news from before the budget was released
, this has details on the actual proposed cuts and re-allocations.