NASA manager casts doubt on 2024 moon landing by astronauts

This August 2019 photo released by NASA, shows the core stage for NASA’s Space Launch System (SLS) rocket at the agency’s Michoud Assembly Facility in New Orleans. Kenneth Bowersox, acting associate administrator for human exploration, is casting doubt on the space agency's ability to land astronauts on the moon by 2024. Bowersox told a Congressional subcommittee Wednesday, Sept. 18, 2019, that NASA is doing its best to meet the White House-imposed deadline. But he says he wouldn't bet anything on it. (Eric Bordelon/NASA via AP)

CAPE CANAVERAL, Fla. — A top NASA manager on Wednesday cast doubt on the space agency’s ability to land astronauts on the moon by 2024.