Challenge: with a POD at any point after the end of WW2, the US establishes a seperate military branch to deal with outer space. IIRC, during the late 40s and into the 50s the Army, Navy and Air Force all had their hands in seperate and often conflicting programs, slowing things down a bit.
Feel free to erase NASa from history if you feel it is necessary.
Feel free to erase NASa from history if you feel it is necessary.