Rocketplane Kistler (RpK) was officially notified by NASA on Friday that they had failed to complete two COTS milestones. Sources from both NASA and RpK have confirmed that the letter does NOT represent a final decision by NASA to terminate the company’s COTS contract.
Meanwhile, RpK are pressing on with the a new configuration of their suborbital Rocketplane XP – to be unveiled at the X Prize Cup.