This has got to be inspired by Stephen Hawking's Universe. 10 mile long asteroid hits earth, penetrates crust, extinguishes life, creates another moon. In the relatively near term, too. Way before the sun going gas gianty. Still plenty of time to come up with an earthy epitaph and write it across moon number one in blinking neon.
Never judge anyone until you have biopsied their brain.
"Be kind, for everyone is fighting a hard battle."
Known Some Call Is Air Am