Possible Clues:

• July 1969 newsmaker
• He was first
• First man to 32-Across (2 words)
• Lear storming out to follow northern space farer
• Pioneer on satellite broadcast mangles intro when introducing queen
• First to walk on the moon
• First man on the moon
• I'm no stranger to travel, involving the foremost of landings
• Space traveler whose first five letters, spelled backward, are oddly appropriate
• Who said 'I put up my thumb and it blotted out the planet Earth'