Hydrogen.
Hydrogen
Hydrogen.
The universe is around 70% dark energy (a.k.a. empty space). The rest is mostly dark matter, with a few percent for ordinary matter. That is the current scientific model.
It is made of atoms, ions, fundamental atomic particles.
The most abundant gas in the universe is hydrogen. Hydrogen atoms make up about 75% of the universe's elemental mass.
Matter is made of atoms, vast collections of atoms. Differences in matter are due to different amounts of protons and neutrons in the atom. Elements are distinguished by the number of protons, whereas isotopes (same element but different mass) are determined by the number of neutrons.
Most of the universe is made up of hydrogen gas, followed by helium. These two gases are the most abundant elements in the universe and can be found in stars, galaxies, and interstellar space.
Most probably quarks, since everything in the universe except light is made of it.
Plasma. It makes up more than 99% of visible matter in the universe, and most of the invisible matter.
The most abundant element in the universe is hydrogen.
Hydrogen is the most abundant element in the universe.
The most abundant element in the universe is hydrogen, which makes up about three-quarters of all matter! Helium makes up most of the remaining 25%