Related Clues:

• 'Everything's fine!'
• Like a perfect launch
• Astronaut's 'thumbs-up'
• NASA's 'fine'
• Just peachy
• Green-light phrase
• 'Good here, Houston'
• Astronaut's 'yes'
• Perfectly all right
• NASA's 'no prob'
• Fine, in space
• Verbal thumbs-up
• "Everything's fine!"
• NASA's "Go"
• Spoken thumbs-up