Helium gas has many uses, including in balloons, medical equipment, space exploration, and manufacturing. 
Balloons 

·         Helium is used to fill party balloons, blimps, and other balloons used for advertising and research

Medical 

·         Helium is used in MRI machines, and in treating respiratory conditions like asthma and emphysema
·         Helium-neon lasers are used in eye surgery

Space exploration 

·         Helium is used to separate hot gases and liquid fuel in rockets
·         Helium is used in scientific balloons and surveillance craft

Manufacturing

·         Helium is used in arc welding to create an inert gas shield 
·         Helium is used to make fiber optics and semiconductors 
·         Helium is used to test seals in products like tires, refrigerators, and air conditioners 

Other uses

·         Helium is used in meteorology to lift balloons that carry instruments 
·         Helium is used in scuba diving and caisson work 
·         Helium is used to detect gas leaks in pipelines and car air conditioning systems 
·         Helium is used in gas chromatography as a carrier gas 
·         Helium is used in helium-ion microscopes 
Helium is a non-toxic, colorless, odorless, and tasteless gas. It is the second most abundant element in the universe.