Aside from the gaping hole in capabilities that WFIRST was uniquely designed to fill in the 2020s, NASA's projected out-year budget delivers a knock-out punch to future U.S. leadership in space astrophysics

President Trump's 2019 NASA budget would pull the plug on astronomer's No. 1 priority for the next decade. NASA's former astrophysics chief says Congress should keep WFIRST funded.