Not very...
Hydrogen and helium are the two most abundant elements in the universe.
Helium. As hydrogen is fused into helium.
helium
Hydrogen and helium are the most abundant elements in stars.
No. Helium is most abundant in the atmosphere of the Earth and in the core of the sun.
Hydrogen is the most abundant element in the universe.
Helium!
helium
Helium.
Hydrogen and helium are, by far, the most abundant substances in the universe.
Helium is believed to be the second most abundant element in the universe, because the energy of most stars arises from the fusion of hydrogen to produce helium.