China has built a research facility that simulates the low-gravity environment on the moon – and it was inspired by experiments using magnets to levitate a frog.

South China Morning Post reported that the facility could provide valuable research for China’s lunar exploration activities, according to scientists involved in the project. Located in the eastern city of Xuzhou, in Jiangsu province, the simulator is expected to be officially launched in the coming months.

The low-gravity simulated environment was inspired by experiments that made use of magnets to levitate a frog, the South China Morning Post reported


Lead scientist Li Ruilin, from the China University of Mining and Technology, said it was the “first of its kind in the world” and would take lunar simulation to a whole new level. The simulator can make gravity “disappear”, Li said in an interview on Tuesday. While low gravity can be achieved in an aircraft or a drop tower, it is momentary. Li said in the simulator that effect can “last as long as you want”.

Currently, simulating low gravity on Earth requires flying in an aircraft that enters a free fall, then climbs back up, or falling from a drop tower, but that lasts minutes. Daily Mail stated that the new lunar simulator, which is a small 2ft room sitting in a vacuum chamber, can simulate low or zero gravity ‘for as long as you want,’ explained its developers.

Inside the 2ft room, they have created an artificial lunar landscape, made up of rocks and dust that are as light as those found on the surface of the moon. Gravity on the moon is about a sixth as powerful as that on Earth, and inside the artificial gravity room, the team makes use of a strong magnetic field to simulate the ‘levitation effects’ of a low gravitational force.

‘Some experiments such as an impact test need just a few seconds,’ said lead scientist Li Ruilin, from the China University of Mining and Technology, adding that ‘others such as creep testing can take several days.’

Independent went further to note that Chang’e mission, which has placed a rover on the far side of the Moon and returned rock samples to Earth, did not manage to recover as many samples as intended because the drill hit unexpected resistance.

It is possible that experiments conducted on smaller models could avoid these events in future. The simulator could also be used to test whether 3D printing could be used to construct structures –including those fit for human habitation – on the Moon’s surface.The idea for the facility came from an experiment that levitated a frog with a magnet, conducted by physicist Andrew Geim, that won the Russian scientist the satirical Ig Nobel prize.


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