Related Clues:

• ''Look, up in the ---!''
• ___-blue
• Word with light or line
• It's overhead
• Upper regions
• It's over your head
• Chicken Little's concern
• Astronomer's focus
• It's up there
• Fifth element
• Pilot's domain
• Firmament
• Some people reach for it
• Berlin's "Blue ___"
• Hit high in the air