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Do all stars turn hydrogen in to helium?
No. Stars that have depleted the hydrogen in their cores may start fusing heavier elements.
Stars leave the main sequence when they?
Stars are said to be off the main sequence when they stop fusing hydrogen into helium.
Why prevents stars collapsing under the force of their own gravity?
The pressure of the fusing gasses
Nearly 90 percent of all-stars are at what point in their life cycles?
90% of all stars are at mid-life where their cores are fusing hydrogen into helium.
What is the main source of energy for stars?
Nuclear fusion, usually by fusing hydrogen-1 to helium-4.
Do all stars turn hydrogen in to helium?
No. Stars that have depleted the hydrogen in their cores may start fusing heavier elements.
Stars produce energy by fusing hydrogen into?
Helium atoms
Stars leave the main sequence when they?
Stars are said to be off the main sequence when they stop fusing hydrogen into helium.
What types of stars are main sequence stars?
Any star that it fusing hydrogen into helium is classed as a main sequence star.
Do hydrogen make stars?
technically speaking, stars are first made of Hydrogen. The moment the star comes to life, it starts fusing together Hydrogen atoms, forming helium. when a star is nearing the end of its life, it starts fusing together helium and keeps on fusing until there is nothing more to fuse. then, the star dies.
Is a star born when helium and oxygen combine?
No. A star is born when hydrogen stars fusing.
Why prevents stars collapsing under the force of their own gravity?
The pressure of the fusing gasses
Stars produce energy by fusing hydrogen into what?
The products of hydrogen fusion are helium and energy.
What are the stars and how they formed?
Balls of incandescent (fusing) hydrogen gas that was brought together by gravity.
Are stars in the main sequence when nuclear fusion of any element is taking place?
No. Stars are only in the main sequence when they are fusing hydrogen.
What stars have left the main sequence?
The main sequence stars are stars that fuse hydrogen, so the stars that have left the main sequence are the ones that have basically run out of hydrogen. They are the Red Giant stars, Supergiant stars and White Dwarf stars.
Is hydrogen found in the universe formed by stars?
No. The hydrogen in the universe was formed during the Big Bang. Stars consume hydrogen, fusing it into helium.
