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The USS Macon, one of the largest helium-filled airships ever created, crashed into the Pacific Ocean off the coast of California and sank<--!(contemporary artist's rendering of the crash).-->
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USS Macon (ZRS-5)
United States historic airship
USS Macon (ZRS-5) was a rigid airship built and operated by the United States Navy for scouting and served as a "flying aircraft carrier", carrying up to five single-seat Curtiss F9C Sparrowhawk parasite biplanes for scouting or two-seat Fleet N2Y-1s for training. In service for…Source: Wikipedia (CC BY-SA)
Helium
Chemical element with atomic number 2 (He)
Helium is a chemical element; it has symbol He and atomic number 2. It is a colorless, odorless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements, and it does not have a melting…Source: Wikipedia (CC BY-SA)
Airship
Powered lighter-than-air aircraft
An airship, dirigible balloon or dirigible is a type of aerostat (lighter-than-air) aircraft that can navigate through the air flying under its own power. Aerostats use buoyancy from a lifting gas that is less dense than the surrounding air to achieve the lift needed to stay…Source: Wikipedia (CC BY-SA)
California
U.S. state
California is a state in the Western United States that lies on the Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares an international border with the Mexican state of Baja California to the south. With almost 40 million residents across…Source: Wikipedia (CC BY-SA)