It takes a lot of gunpowder to lift a firework into the sky, before the show can even begin.
Today’s invention offers a better form of firework display.
Launching fireworks from a tethered hot air balloon avoids wasting all that propellant just on gaining height…so the spectacle can be better for a given amount of powder.
It might also be seen as safer, given that nobody is lighting explosives beside members of a crowd of spectators.
