උන් ඒව පැලකරල තියෙන්නෙ හදේද නැත්නම් යානය ඇතුලෙද මචන්
By Paul Rincon, Science editor, BBC News website
The lunar mini biosphere experiment on the Chang'e-4 lander is designed to test photosynthesis and respiration - processes in living organisms that result in the production of energy. The whole experiment is contained within an 18cm tall, 3kg canister that was designed by 28 Chinese universities.
The organisms inside have a supply of air, water and nutrients to help them grow. But one of the challenges, say Chinese scientists, is to keep the temperature favourable for growth when conditions on the Moon swing wildly between -173C and 100C or more.
They also have to control the humidity and nutrients. Some have raised the question of whether the experiment risks "contaminating" the Moon with biological material, but scientists generally think this is of little concern. And it's worth reiterating that there are already containers of human waste on the Moon left behind by the Apollo astronauts.
