Xenon
Xenon is a chemical element with the symbol Xe and atomic number 54. It is a colorless, dense, odorless noble gas found in trace amounts in the atmosphere. Xenon is used in astronautical engineering as a propellant for ion thrusters, which are used to propel spacecraft. It is also used in arc lamps, which are used to simulate sunlight for testing solar cells and other space equipment. Xenon is also used in cryogenics, as it has a low boiling point and can be used to cool spacecraft components. In addition, xenon is used in space-based telescopes as a coolant for the detectors.
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