When a person goes beyond the Earth, at least to close Mars, he will have to take with him not food, but technologies for creating food in conditions that are radically different from our planet. Because there will not be enough canned food - the essential food must be reproduced. Recently, an experimental greenhouse in Antarctica has made progress in this direction.
The German station Neumayer III is located on the coast of the sixth continent, far enough from the pole. But here, too, it is useless to rely on the help of nature, so scientists took the chance and built a completely man-made high-tech greenhouse. It has an autonomous water supply system, climate control isolated from the station, artificial lighting and a carbon dioxide level monitoring system.
Scientists use combined cultivation methods for edible plants without focusing solely on hydroponics. And recently they got their first full harvest. This is 4 kg of salad, 18 fresh cucumbers and as much as 70 radishes - more than you need for a festive dinner. Now that the fundamental possibility of growing plants without sunlight and soil has been proven, a second problem arises: how to increase yields?
The potential of the Antarctic laboratory is limited, it is impossible to expand it, to equip more beds, all that remains is to improve the technology of plant growth. Researchers are confident that in a month they will go to the streaming vegetable growing and will collect 5 kg of fresh food per week. With the prospect of continuing this at least all year round, because if the work of the garden does not in any way depend on the natural cycles on the planet, then it can give one harvest after another constantly. What the first colonists on Mars need.