sun/stars use oxygen to burn? gravity vers heat?

Question

after seeing a megnetic levitation mashine boild water. im thinking now that fire auctily rises because it is resists gravity. that is if gravity is megnetic. (south/north) ok i read that fire needs oxygen to burn. what about the sun is it fire? or is it somthin else?fire does need oxygen right? mmm heres im thinking that heat rises from gravity and that fire is very dence heat or rising and burning chemicals(changing form rapidly). the heat makes it rise from gravity. ok you could say less denceity rises above more dencity. but is fire less dence then air and why does it give of light? sparks give off light but they are going to ground. travling a direct path. fire gives off light but it just goes up! or is it more like tons of little sparks happining inside the elements burning? or w/e there doing. heat is created by friction. or is there othere things that create heat? im a little confused but im thanx for reading this if you got this far. my questions require some sorting

Answer 1

The sun does not 'burn'. It explodes. It is a process called thermonuclearfusion. What happens is that two hydrogen atoms combine together to form a helium atom under tremendous pressure and heat. The process produces a huge amounts of heat. Now, your understanding of fire is very wrong. Fire is not a substance to have density. It is actually the energy fallout when there is a chemical reaction. The reason it 'rises' is because the energy levels there are so high that all matter inside it enters a plasma state.

Answer 2

Fire seems to rise because the air its in is heated. Hot air is less dense than cold air - so hot air rises. The sun is not burning like you usually think of burning. There is no oxygen on the sun. The sun is a ball of hygrogen gas that undergoing fussion reaction caused by the pressure. 2 hygrogen atoms are 'fused' together to form helium, and release heat. The main gases on the sun are hygrogen and helium.

By the way, gravity is not magnetic.

Answer 3

The suns version of "warmth" ios like compaaring a advantageous, toasty hearth to a hydrogen bomb. One will furnish heat temperature promptly, the different will produce immence warmth FROm leveling a city. basically placed, the sunlight is burning, yet in comparison to a hearth. interior the sunlight's center, the sunlight has a insane volume of hydrogen. applying tactics on Nuclear Fusion, it fuses 2 hydrogen atoms right into a helium atom, making a plasma that delivers off heal and lightweight. this is because of the fact the suns center is extra effective than warm sufficient to accomplish the reactions, because of the fact it fairly is over 15,000,000 stages Celcius (over 27,000,000 stages fahrenheit!!!!). to that end, it may consistently fuse the atoms and supply off a mild furnish of sunshine, skill, and warmth. As for the oxygen question: there is definitely oxygen in area! the challenge is, not sufficient to respire. Its almost like water in a sence: its there, yet we cant use it (In waters case, even though if, its bonded with 2 hydrogen atoms, so its not a surprize we cant use it...) and consequently, we arnt waiting to respire.