Helium-3 (HE-3) a colorless, odorless, odorless, and stable helium isotope gas that is stored in cylinders at high pressure and has a natural helium-3 content of 1.38x10-6. Asphyxiation may occur when the increased oxygen content results in a lower oxygen content than 19.5%. Self - suction breathing mask. In 1996 David Lee, Douglas Oscherov and Robert Richardson Shared the 1996 Nobel Prize in Physics for their discovery of superfluidity in helium 3 (3 HE). The discovery of he superfluids has strange applications in astrophysics. 3He superfluids produced by phase transitions have been used to test theories about how so-called cosmic strings form in the universe. The team used neutrino-induced nuclear reactions to rapidly locally heat the superfluid. When they cooled down again, they formed vortices. These vortices act as cosmic strings. Although this result cannot be used as evidence for the existence of cosmic strings, it can be considered as a verification of the theory of 3He fluid vortex formation. The discovery of 3He superfluid has not only promoted the research of condensed matter physics, but also pioneered the use of NUCLEAR magnetic resonance (NMR) in the process of discovery. Today, NMR tomography has developed into a common means of medical diagnosis.

Because there are no neutrons in thermonuclear reactors using helium-3 (thermonuclear reactions with deuterium produce only protons that are not radioactive), the use of helium-3 as an energy source produces no radiation and poses no environmental hazards. Helium-3 is now widely recognized as an efficient, clean, safe and cheap fuel for nuclear fusion power generation. Helium 3 plays an important role in magnetic resonance imaging equipment superconducting electromagnetic cooling, military industry, scientific research, petrochemical, refrigeration, medical treatment, semiconductor, superconducting experiment, optoelectronics, laser gyro and other fields.

How to bring helium-3 back from the moon is now the first question scientists have to answer. Although helium-3 in lunar soil has a great prospect of exploitation and utilization, a series of problems such as mining and transporting helium-3 are very complicated, which not only requires huge labor force, but also costs a lot. It is still unknown when the true utilization of helium-3 can be realized.