Found in natural gas deposits and in the air (5 parts per billion) Constantly lost to space; replenished by radioactive decay (alpha particles). Helium is the second most abundant element in the universe by mass (25%). Most of the helium supplied around the world comes from the area around Amarillo, Texas. 
Annual commercial production is around 4500 tons. 
Abundance 

ଇତିହାସ
ଉତ୍ପାଦନ
ବୈଜ୍ଞାନିକ ଆବିଷ୍କାର
ବ୍ୟବହାର