(Image credit: dima_zel/iStock/Getty Images) The scientists behind NASA's largest and most powerful space telescope ever built are bracing for potentially crippling budget cuts, and the observatory is only halfway through its primary mission.The team overseeing NASA's James Webb Space Telescope (JWST) has been directed to prepare for up to 20% in budget cuts that would touch on every aspect of the flagship observatory's operations, which are managed by the Space Telescope Science Institute (STSc...