NASA administrator explains Twitter spat with SpaceX

HAWTHORNE, Calif. (AP) — NASA Administrator Jim Bridenstine says a Twitter statement critical of SpaceX was a signal to all of the space agency’s contractors that more realism needs to be built into development timelines.
Bridenstine addressed the issue Thursday at a newsconference after touring SpaceX headquarters in Hawthorne, California.
SpaceX is developing a capsule under NASA’s commercial crew program to launch astronauts to the international space station so that the U.S