Neon Lights
Ne is a noble gas, atomic #10, group 18, inert (inactive) because of its completely filled outer valence shell. It is the 5th most abundant element in the Universe, but rare on Earth due to its lightness and inertness. It was discovered in 1898, by a Scot in London, who chilled a sample of the atmosphere to a liquid, then captured the gas (among others) as the liquid warmed. It emits a distinct reddish glow- attractively displayed in neon advertising signs, and it is also commonly used in vacuum tubes.
An isotope of neon, 20Ne, if found in volcanic gases and diamonds, suggesting a solar neon (Ne made in the Sun) reservoir in Earth. It would have traveled here as ions in solar wind. Cool.