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.
No, the Hindenburg is often called âblimpâ but that is not correct; Hindenburg was a rigid airship that maintained its shape by means of a metal framework. What is a Rigid Airship? A rigid airship has a framework surrounding one or more individual gas cells, and maintains its shape by virtue of the framework and not from the pressure of its lifting gas.