Closed-Loop Biological Space Greenhouse Model

Underwrite 5,000 m³ automated aeroponic/hydroponic bio-regenerative life support greenhouses on the Moon recycling 98% of human metabolic water, absorbing CO2, and producing 45 tonnes/year of fresh nutrient-dense food for 24 astronauts. Model space base food off-take ($1,850/kg), and 20-yr IRR.