Food for orbital colonies
Regulated light, hydroponics, and closed loops allow growing fresh food in microgravity conditions and with limited resources.
1. Light and photosynthesis
Calculate hours of light, intensity, and photosynthesis productivity.
2. Biomass and nutrients
Analyze the biomass growth, water, and nutrients.
3. Resources and equipment
Calculate crew provisions, energy consumption, and stability index.
📚 Article: Orbital Farming
Technologies
Spectral LED lights, hydroponics, aeroponics, CO₂ bioreactors, robotic misting, microgravity sensors.
Biology
Edited cultures, microbiomes, phototropism in microgravity, controlling biofilms, multicultures.
Logistics
Closed water cycles, waste utilization, seed backup, integration with life support systems.
❓ FAQ
1. Why Greenhouses in Space?
For autonomous provision of food, oxygen, and psychological support for the crew.
2. How does fertilization occur?
Tasks, manual processes, or sound waves adapted to microgravity.
3. Which crops are the most efficient?
Leafy greens, microgreens, beans, tomatoes, berries — fast cycles and nutrition.
4. How do you control pests?
Biological control, sterile systems, microclimate, sensors for airborne pollutants.
5. What with the soil?
Use substrates, matrices, or aeroponics; traditional soil is rarely applied.
6. What risks?
Light deprivation, biocorruption, energy limitations, microbial community instability.
7. How does it integrate with life support?
CO₂ recycling, water, waste; greenhouses become bioregenerative modules.
8. Are There Real Projects?
NASA Veggie, MELiSSA ESA, Chinese bioregenerative systems, commercial concepts from Orbital Farms.
9. What is the energy efficiency?
Up to 25–35% of the station's energy, optimization via LED and heat pumps.
10. Can exports be sent to Earth?
Grow seeds, biomaterials, crops; the main focus is on supplying the crew.
📖 Handbook with Examples
Example 1: Light
18 hours, 450 PPFD, 280 m².
Photons 2.7 mol/day, efficiency 2.1 g/mol.
Example 2: Biomass
5.8%, 420 L, 78%.
34 kg/day increase, water savings of 3.3 m³/week.
Example 3: Resources
24 people, 980 kW·hr, 64%.
Provision 62% of diet, stability index 0.76.