Related Clues:

• It's up there
• Fifth element
• Pilot's domain
• Bright-eyed and bushy-tailed
• Firmament
• Compass direction
• Some people reach for it
• Like an insomniac
• Needle heading
• Berlin's "Blue ___"
• Hit high in the air
• Way up?
• Caffeinated?
• Jet setting
• Cloudy areas