Pam Melroy, NASA’s deputy administrator, visits the Psyche spacecraft undergoing processing May 19 at the Kennedy Space Center in Florida. Credit: NASA-JPL/Wes Kuykendall
The launch of NASA’s Psyche asteroid mission, which was set for Aug. 1 on a SpaceX Falcon Heavy rocket, has been delayed to no earlier than Sept. 20 after ground teams discovered an issue during software testing on the spacecraft, officials said Monday.

