Helium is very rare: 0,000524 %.
Not very...
As a star ages, it fuses hydrogen into helium in its core. Therefore, helium becomes more abundant in older stars compared to younger stars.
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 and helium are the two most abundant elements in the universe.
Helium!
helium
Helium.
Helium is more abundant on Jupiter than on Saturn. Jupiter has a higher concentration of helium in its atmosphere compared to other planets in the solar system, including Saturn.
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.
Hydrogen is the most abundant element in the known Universe; helium is second.
Helium is the most abundant of the Noble gases in the universe.