The additional funds would support the administration's directive to reinvigorate human and robotic exploration of Earth's moon and other
planets in the solar system but would also come at the expense of several other big - ticket items in NASA's portfolio — namely the International Space Station (ISS) as well as the Wide Field Infrared Space Telescope (WFIRST), a «
flagship» - class
mission next in line for launch after the James Webb Space Telescope (JWST).