与2006年版《美国国家航天政策》的对比,新的航天政策的继承变化主要体现在如下内容。1.目录部分相似点:两版政策的目录总体上相似,但在2006版政策中,在背景、原则和目标之后首先提出了国家安全航天指导方针 In contrast with the 2006 edition of the U.S. National Space Policy, the changes in the succession of the new space policy are mainly reflected in the following. 1. Contents part of the similarities: Catalog of the two versions of the policy is generally similar, but in the 2006 version of the policy, background, principles and objectives first proposed the national security spacecraft guidelines