Lunar Regolith
Composition and Challenges for Agriculture
Lunar regolith is the layer of loose, fragmented material covering the Moon's surface, formed over billions of years by meteorite impacts, solar wind bombardment, and cosmic ray exposure. Unlike Earth's soil, regolith lacks organic matter, beneficial microorganisms, water, and essential plant nutrients. It also contains potentially toxic metals such as chromium and nickel, and reactive nano-particles of iron that can damage plant cells.
- Composition: Primarily silicates — plagioclase feldspar (45%), pyroxene (25%), olivine (10%), ilmenite (5%), and glass particles
- No organic carbon, nitrogen, or phosphorus — the three critical macronutrients for plant growth
- Grain size: Extremely fine (average 70 micrometres), causing compaction when wet, which inhibits root growth and seed germination
- Apollo missions (1969–1972) brought back ~382 kg of lunar samples; current regolith research uses simulants designed to match Apollo sample composition
- In 2022, University of Florida scientists grew Arabidopsis thaliana (thale cress) in actual Apollo-era lunar soil — the first time any plant was grown in real lunar regolith, though the plants showed significant stress
● Tracked since March 05, 2026 · last seen April 15, 2026 · updates as the daily brief publishes
15 Apr '26
Chandrayaan-3: Vikram’s hop offers fresh insights on the moon’s surface
Science & Technology
10 Mar '26
With lunar missions looming, scientists grow chickpeas in 'moon dirt'
Science & Technology
See it in today’s brief.
Daily current affairs with every static concept explained in place.
Read the daily brief