Answer: NEIL

AnswerCrossword Clue
NEILPop singer Sedaka
NEILSinger Young
NEILAstronaut Armstrong
NEILDiamond with records
NEILFirst name in moonwalking
NEILSinger Sedaka
NEILDiamond who sang "Sweet Caroline"
NEILDiamond in "The Jazz Singer"
NEILDiamond onstage
NEILFirst name in space
NEILPlaywright Simon
NEILDiamond on stage
NEIL"Sweet Caroline" singer Diamond
NEILArmstrong in space
NEILSpacemate of Michael and Buzz
NEILFirst first name on the moon
NEILArmstrong on the moon
NEILArmstrong who took a "giant leap for mankind"
NEILDiamond in music
NEILSinger Diamond
NEILJustice Gorsuch
NEILDiamond of note
NEILDiamond or Simon
NEILBuzz's moonmate
NEILSedaka of song
NEILSimon or Diamond
NEILDiamond of song
NEIL"Cosmos: A Spacetime Odyssey" host deGrasse Tyson
NEILFirst name on the moon
NEILDirector Jordan
NEILDiamond who went platinum
NEILDiamond of fame
NEILFirst name in moon-walking
NEILYoung with a guitar
NEILMusical Diamond
NEILSedaka or Simon
NEILYoung in rock
NEILMoonwalker Armstrong
NEILCultural critic Postman
NEIL"Amusing Ourselves to Death" author Postman