Credit: Adapted from Andrea Wright, Flickr Creative Commons In case you haven't heard, Republicans have pushed through a spending measure in the House Science, Space, and Technology Committee that would slash more than $300 million from NASA's Earth science programs. They argue that NASA should get back to its true mission: Exploring space, not studying and monitoring Earth. Republican Senator and presidential candidate Ted Cruz summed up the GOP's argument during a Senate hearing in March (as reported by Andrew Freedman of Mashable):