Estimates for SLS rose to $9.1 billion, up from close to $7 billion in 2014, according to a report to Congress in July from human space flight program director Kathy Lueders. The estimate for Exploration Ground Systems, which includes the apparatus to launch SLS from Kennedy Space Center, is now $2.4 billion, up from an estimate of $1.84 billion in 2014.
NASA head says without $3.2 billion soon, NASA won’t hit 2024 moon landing target
