Related Clues:

• 'Ain't happening'
• Word on a sash
• Thumbs-down at NASA
• Like a scrubbed space mission
• Canceled, to 69-Across
• Scrubbed, NASA-style
• "___ Congeniality"
• "It's a ___" ("It's been canceled")
• Mission-scrapping words
• Failed NASA launch
• "Bye-bye, ___ American Pie ..."
• NASA nix
• Canceled, NASA-style
• ___ Piggy
• Astronaut's negative