Study of earthworms' (𝐸𝑖𝑠𝑒𝑛𝑖𝑎 𝑓𝑒𝑡𝑖𝑑𝑎) survival in both Martian (CO2) atmosphere and Earth atmosphere within a Mars regolith simulant under Martian solar cycle (day/night, temperature and solar spectrum). Study of earthworms' (𝐸𝑖𝑠𝑒𝑛𝑖𝑎 𝑓𝑒𝑡𝑖𝑑𝑎)survival on lunar surface in a lunar regolith simulant in a lunar simulant soil (Lunar Highlands regolith simulant, Lunar Mare regolith simulant) under current lunar solar cycle (day/night, temperature and solar spectrum).A long-term study of chemical/organic changes of Mars and lunar regolith simulants through continuous recycling of aboveground organic/plant waste (will be using alfalfa (𝑀𝑒𝑑𝑖𝑐𝑎𝑔𝑜 𝑠𝑎𝑡𝑖𝑣𝑎)). Alongside, studying if this hypothetically more organic, terrestrial-like soil could increase plant biomass and produce 'healthier' plants.