Today, we are here to settle the dispute once and for all, is a sonic rainboom really possible? Enter Astro-Brony with the Rainboom 1, a class 2 high power rocket designed to carry Rainbow Dash stand-in to the speed of sound.

Astro-Brony here, standing by for launch.

UPDATE: I'm currently constructing the Rainboom Mk 2 at the moment, and it is SO COOL. It'll be a lot better than the Rainboom 1 and will not break apart mid-flight.