It’s cheaper than putting an urn in a rocket
In space-tight Japan, the dead are cremated. But while urns take up less space than a coffin, even urn-sized graveyard plots are expensive, and a tombstone will set you back about ¥1 million (USD $7K-plus). Thus a company called Balloon Kobo invented a convenient, low-cost and poetic way to dispose of ashes, following a rather creative sort of funeral.
The company grinds the cremated ashes into a fine