What is 98% of the universe made of?

The lightest two, hydrogen and helium, make up 98 percent of what we see in the universe. They have an unfair advantage in that they've been around since shortly after the Big Bang. Most of the other elements had to wait for giant nuclear reactors known as stars to churn them out.

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In respect to this, is the sun made of gas?

The sun is made up of a blazing combination of gases. These gases are actually in the form of plasma. Plasma is a state of matter similar to gas, but with most of the particles ionized. This means the particles have an increased or reduced number of electrons. One may also ask is helium a solid liquid or gas?

Which was discovered first neon or xenon?

Xenon was discovered in England by the Scottish chemist William Ramsay and English chemist Morris Travers in September 1898, shortly after their discovery of the elements krypton and neon. Accordingly, what is the greek word for helium? The name is derived from the Greek, 'helios' meaning sun, as it was in the sun's corona that helium was first detected.

Consequently, who discovered hydrogen?

In the early 1500s the alchemist Paracelsus noted that the bubbles given off when iron filings were added to sulfuric acid were flammable. In 1671 Robert Boyle made the same observation. Neither followed up their discovery of hydrogen, and so Henry Cavendish gets the credit.