Photosynthesis in Red Dwarf Light
M-dwarf stars emit mostly infrared. Plants evolved under G-type spectra need adapted LED spectra to photosynthesize efficiently. Research shows red:blue ratios of 3-5:1 work best for biomass accumulation.
Interstellar Greenhouse — Alien Plant Encyclopedia
Explore how Earth crops adapt to low gravity, high radiation, and exotic starlight. Simulate plant growth on alien worlds and find the best species for your colony.
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Environment Parameters
102000
0.1200
0.012.5
Effective PAR
79.5 µmol/m²/s
Radiation Factor
1.4×
PAR Fraction
45%
Peak Wavelength
550 nm
Plant Recommendations
| Species | Type | Viability | Days to Harvest | Yield | LED Power |
|---|---|---|---|---|---|
Radiotrophic Fungus (Xeno-engineered) Fictional: uses melanin to convert gamma radiation into metabolic energy | Fictional | High (95%) | 14 d | 2.86 g/m²/d | — |
Silicon Cactus (Xenomorphica) Fictional: silicon-based extremophile, survives near-vacuum, slow growth | Fictional | High (95%) | 180 d | 1.43 g/m²/d | — |
Arabidopsis thaliana Model plant, rapid life cycle, used in ISS experiments | Real | High (95%) | 42 d | 0.47 g/m²/d | 28.2 W/m² |
Chlorella (Microalgae) Extremophile algae, high O2 production, rapid growth | Real | High (81%) | 3 d | 16.15 g/m²/d | 8.2 W/m² |
Sweet Potato High-calorie tuber, NASA ALS candidate crop | Real | Medium (70%) | 120 d | 5.58 g/m²/d | 128.2 W/m² |
Potato High-yield staple, validated in sealed chamber trials | Real | Medium (70%) | 90 d | 4.88 g/m²/d | 128.2 W/m² |
Dwarf Wheat Compact cereal, ISS-tested, medium light needs | Real | Medium (65%) | 70 d | 3.27 g/m²/d | 168.2 W/m² |
Viability scores are weighted: PAR suitability (35%), radiation tolerance (35%), pressure (15%), gravity (15%). LED power assumes horticultural LEDs at 2.5 µmol/J efficacy.
Species data sourced from NASA BVAD (2018), Wheeler et al. (2003), and Poulet et al. (2020). Fictional species are speculative designs based on known extremophile biology.
Space Agriculture Science
Gravity & Root Architecture
Microgravity disrupts gravitropism. ISS experiments show roots grow in spirals without gravity cues. Porous tube hydroponics and aeroponics are leading solutions for root zone management in space.
Radiation Shielding for Crops
Galactic cosmic rays damage plant DNA. Underground greenhouses (lava tubes) or water-shielded modules can reduce exposure 100-1000x. Polyploid plants show enhanced radiation tolerance.
Frequently Asked Questions
How are plant viability scores calculated?
Viability is a weighted score (0-1) based on PAR suitability (35%), radiation tolerance (35%), atmospheric pressure (15%), and gravity (15%). A score above 0.7 indicates high viability for the given environment.
What do the fictional plant species represent?
Fictional species are speculative designs based on known extremophile biology on Earth. Radiotrophic fungi are inspired by melanin-rich Cryptococcus found in Chernobyl. Silicon-based organisms are theoretical constructs for ultra-low-temperature, low-pressure environments.
How is LED power consumption calculated?
LED power is calculated assuming 2.5 µmol/J horticultural LED efficacy. The supplemental PAR needed to reach each species minimum optimal range is divided by this efficacy to estimate watts per square meter.
Does this tool account for Martian/Lunar regolith?
The current version focuses on atmospheric, gravitational, and radiative factors. Soil chemistry (regolith toxicity, nutrient availability) is planned for a future update.
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