NOT KNOWN DETAILS ABOUT NASCENCY ANTONYMS AND SYNONYMS

Is there any explanation aside from politics why all Strategies for nuclear pulse propulsion happen to be abandoned?I think the discussion about /x/ and /χ/ is superfluous. I checked several WIKI-internet pages and whilst the a single suggests that /x/ is Erroneous one other says /x/ is right.There may be little variation in the primary team by wa