Related Clues:

• 'Forget it,' at NASA
• Like an aborted space mission
• NASA's 'Forget it'
• 'Ain't happening'
• Thumbs-down at NASA
• Like a scrubbed space mission
• Canceled, to 69-Across
• Scrubbed, NASA-style
• "It's a ___" ("It's been canceled")
• Mission-scrapping words
• Failed NASA launch
• NASA nix
• Canceled, NASA-style
• Cleaned one's hands
• Astronaut's negative