Every terrestrial repository — however hardened or geographically distributed — shares common-mode exposure to planetary-scale hazards: asteroid impact, supervolcanic eruption, nuclear war, pandemic, climate catastrophe.

This is not a speculative risk. It is a structural vulnerability. The concentration of all biological information at a single address means that diverse, independent threats share a single consequence: total, irreversible loss.

The solution does not require new technology. It requires putting existing data on existing rockets that are already going to space. The marginal cost per launch is less than a first-class airline ticket.