Helium, a lighter than air gas, is used for buoyancy in the Goodyear Blimp. Hydrogen has not been used for many decades because of the explosive danger.
The element that is used in the Goodyear blimp and other dirigibles is helium. This gas is lighter than air and causes the blimp to rise.
Helium is the answer if you don't believe me go on Wikipedia and search blimp.
Helium
In 1925, the first commercially available blimp was built, the Goodyear Pilgrim. It was also the first to be used for public relations. This blimp started the Goodyear Santa Claus Express program where each December the company would decorate it to celebrate the season.The first Goodyear Blimp, the Pilgrim, was first flown in 1927.
The latest Goodyear Blimp is reputed to have cost almost $ 4 million.
It might be Helium.....symbol He. But I'm not sure.
23,878 feet
Several blimps (Goodyear and Fuji) are used at sporting events and can be seen either live or on TV.
The first Goodyear blimp, called Pilgrim, flew in 1925.
The oldest operating airship is a Goodyear Blimp. The blimp is named the Spirit of Goodyear and has more than 41,000 flight hours.
Blimps come in all shapes and sizes, for comparison, the 1972 Goodyear Blimp's maximum weight was 12,840 lbs.
SouthWest Virginia. it just flew over my house.