xenon

Science under pressure can produce marvelous results, such as an entirely new way to store hydrogen fuel. Researchers combined the noble gas xenon with molecular hydrogen (H2) to make a never-before-seen solid that opens the doors to an entire new family of materials for hydrogen storage.

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Scientists at Case Western Reserve University, Brown University, and several other collaborators are building an underground science lab where, in a 300-kilogram tank filled with liquid xenon, they hope to find dark matter -- the material that scientists believe was instrumental in helping to form the universe.

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NASA's Ion Engine

1. Charge the Fuel
Xenon is an inert gas, seemingly useless for rocketry. Before it´s used as fuel, the engine must convert it into an electrically charged gas, also called a plasma. An electron emitter fires electrons at the xenon gas. When an electron hits a xenon atom, it strips off an additional electron from the atom´s shell to create a positively charged xenon ion.

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