1 Hydrogen is the most abundant element in the universe. 2  Hydrogen isn't common in a pure form on Earth, but is mostly found as part of water. 3  Hydrogen is the main fuel of stars and the only fuel for red dwarfs. 4  The whole universe is thought to have been formed by a Hydrogen nucleus.
Noun. 1. hindlimb-a posterior appendage such as a leg or the homologous structure in other animals. hind limb. hind leg-the back limb of a quadruped. limb-one of the jointed appendages of an animal used for locomotion or grasping: arm; leg; wing; flipper. 1  Facebook.
A zeppelin is a lighter-than-air vehicle which has an internal frame. Bags are used to hold hydrogen or helium to provide lift. These differ from dirigibles, which have no int â¦ ernal frame, and are simply a large gas bag. The Hindenburg was a zeppelin which crashed and burned at Lakehurst, New Jersey. The Hindenburg was the ulitmate of zeppelin designs built as a propoganda tool for the Nazi leader Hitler. It crashed in 1937, just prior to WW2. The US Navy had built Zeppelins before WW2 but the idea was scraped after several accidents. Now, in 2000, designers are again studying ways to use airships to carry passengers and cargo.