Twins in the sky
Else clues• '60s NASA program
• '60s NASA project
• The Twins
• Apollo preceder
• Castor and Pollux
• Castor and Pollux constellation
• Castor's place
• Early Cape Canaveral program
• Early June baby - or babies?
• First mission to subject American astronauts to long-duration flights
• First U.S. spacewalk mission
• Heavenly pair
• John F. Kennedy or George H. W. Bush
• Late-spring baby
• Mary-Kate and Ashley's sign, fittingly
• May-June sign
• Mercury follower
• Mid-'60s NASA program
• NASA vehicle name
• Pair, up there
• Person born on June 16, e.g.
• Pre-Apollo program
• Pre-Apollo project
• Program preceding Apollo
• Program until 1966
• Sign after Taurus
• Sign before Cancer
• Sign of spring
• Sign of the twins
• Sign of the zodiac
• Sign of twins
• Sign that I'm in, e.g.
• Taurus follower
• Taurus successor
• The Twins of the Zodiac
• Twins constellation
• Twins on high
• U.S. spacecraft
• Zodiac sign
• Zodiac twins
• Zodiac's Twins
• The sun is in this sign from May 21 to June 20
• A zodiacal constellation in the northern hemisphere between Taurus and Cancer on the ecliptic
• The third sign of the zodiac