Nov. 2 (UPI) -- SpaceX Sunday said it is stepping up its efforts to develop a simplified Human Landing System for NASA as it pursues a plan to return to the moon. SpaceX has been heavily involved in the HLS, which is based on the upper stage of the company's Starship rocket, which is still being developed. SpaceX released an in-depth, 2,000 word post Sunday detailing the progress it has made on Starship, which completed its 11th test flight last month. It highlighted steps it has taken to