The results of this study found that if only the aliphatic hydrocarbons can be converted into biomass (minimum scenario) the resulting mass of edible biomass extractable from asteroid Bennu ranges from 5.070 × 10⁷ g to 2.390 × 10⁸ g. If the biomass extraction process, however, is more efficient… then the mass of edible biomass extractable from asteroid Bennu ranges from 1.391 × 10⁹ g to 6.556 × 10⁹ g. This would provide between 5.762 × 10⁸ and 1.581 × 10¹⁰ calories that is enough to support between 600 and 17 000 astronaut life years.

Neat!