Possible Clues:

• Firm's method for speaking to audience is out of this world
• Immeasurably vast
• Commanding Officer in charge set about sergeant major — great!
• Huge comedian comes around front of stage
• Making people laugh about Sagan's 'Origin of the Universe'?
• Huge issue for children, inspiring son
• Characteristic of the universe
• Great wit punched by son
• Grandiose
• 'Like wow, man'