Answer: astronauts

AnswerCrossword Clue
ASTRONAUTS

The experts on travel in outer space.

ASTRONAUTS

Mercury men.

ASTRONAUTS

Today's supermen.

ASTRONAUTS
Wearers of G suits.
ASTRONAUTS
Certain V.I.P.'s
ASTRONAUTSLong-distance riders.
ASTRONAUTSMen in space
ASTRONAUTSArmstrong, Conrad, etc.
ASTRONAUTSGlenn and Armstrong
ASTRONAUTSThey waved from outer space
ASTRONAUTSHouston's spacemen?
ASTRONAUTSRide's fellow riders
ASTRONAUTSHighest fliers
ASTRONAUTSThey fly higher than anyone
ASTRONAUTSSpacey types?