Blue Origin's 4th astro-tourism flight set to launch without big names

FILE PHOTO: Amazon and Blue Origin founder Jeff Bezos addresses the media about the New Shepard rocket booster and Crew Capsule mockup at the 33rd Space Symposium in Colorado Springs, Colorado, United States April 5, 2017. REUTERS/Isaiah J. Downing/File Photo

(Reuters) - The fourth commercial flight of Jeff Bezos' space tourism venture Blue Origin, offering short suborbital joyrides to well-heeled thrill-seekers and celebrity guests, was due for liftoff on Tuesday from the company's launch site in rural west Texas.

Blue Origin's New Shepard spacecraft was slated for launch at 8:30 a.m. CDT (1330 GMT) with six would-be citizen astronauts strapped into the crew cabin atop the fully autonomous launch vehicle, standing nearly six stories tall, outside Van Horn, Texas.