Pete Davidson will no longer travel on Blue Origin's upcoming space mission

Pete Davidson will no longer fly to space with Blue Origin this month after the launch date was postponed by six days, Blue Origin said Thursday. It's not yet clear who will replace the 28-year-old comedian on the voyage. 

"Blue Origin's 20th flight of New Shepard has shifted to Tuesday, March 29," the company said.  "Pete Davidson is no longer able to join the NS-20 crew on this mission. We will announce the sixth crew member in the coming days."

A Blue Origin spokesperson told CBS News the company needed to delay the flight so that it could run "additional pre-flight tests on one of the vehicle's subsystems."