Hydrogen
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The gas that makes up 93% of Earth's atmosphere is nitrogen. Oxygen is the second most abundant gas, making up around 21%.
The most common gas in nebulae is hydrogen. Hydrogen makes up about 90% of the atoms in the universe and is the building block for stars and galaxies. It emits light in the red part of the spectrum, creating the characteristic pink or red glow of many nebulae.
Hydrogen is the most abundant element in the universe.
Most of the outer planets, such as Jupiter and Saturn, contain hydrogen as the primary light element. Hydrogen is the most abundant element in the universe and makes up a significant portion of these gas giants' composition.
Hydrogen is the most common element in the Sun, in most stars, as well as in the Universe in general.Hydrogen is the most common element in the Sun, in most stars, as well as in the Universe in general.Hydrogen is the most common element in the Sun, in most stars, as well as in the Universe in general.Hydrogen is the most common element in the Sun, in most stars, as well as in the Universe in general.