Related Clues:

• Empty area, may be outer
• Empty or vacant, like space
• Absence of matter
• Area empty of matter
• Emptiness, empty space
• Space entirely devoid of matter
• Null or emptiness
• After 50 I had something empty
• Nowhere on earth like this southern step
• A southern step all around us
• There's nothing in it
• A might steer clear of nothing like this
• The southern step may go on forever
• 'Only one step at last, but out of this world (5)'
• No longer in force