As NASA scrambles to meet U.S. President Donald Trump’s mandate to return humans to the moon by 2024, two longtime heads of NASA’s human exploration wing were demoted Wednesday in a slew of administrative shakeups, officials said in an internal memo. The biggest change to rock the agency is the demotion of Bill Gerstenmaier, who was leading the efforts to return humans to the lunar surface. The agency’s chief Jim Bridenstine announced the changes in an internal memo to employees, signaling the latest leadership changes.
