Blue Origin, Amazon founder Jeff Bezos' space tourism company, has delayed the next flight of its New Shepard rocket for more testing work.
Originally, the flight was scheduled to take place next week but it has been pushed back to March 29.
The company said Saturday Night Live comedian Pete Davidson will also now not take the short trip into orbit.
Earlier this week, Blue Origin had announced that Davidson would be one of six guest passengers on the flight
In a brief notice, Blue Origin did not immediately explain the delay or why Davidson was taken off the manifest of the company's fourth commercial flight since the summer.
Davidson, 28, is Kim Kardashian's boyfriend, and would have been the third celebrity to step aboard Blue Origin's automated capsule for the 10-minute flight from West Texas.
Veteran Star Trek actor William Shatner and former NFL star and 'Good Morning America' co-host Michael Strahan went into orbit last year.
In July, Bezos, the billionaire founder of online retail giant Amazon, travelled on the inaugural flight with his brother Mark, Wally Funk and Oliver Daemen.
Blue Origin said its sixth guest would be announced in the coming days as Davidson could no longer join the flight.
The five passengers previously announced are angel investor Marty Allen; real estate bigwigs Marc Hagle and his wife Sharon Hagle; Jim Kitchen, a University of North Carolina professor; and George Nield, founder and president of Commercial Space Technologies.