Whose goal was to change common iron to gold? At least not as we understand burning in our day to day lives. A: Since there is no air and space, rockets need to take oxygen with them into space.
Interesting and easy to understand, even for a physics idiot such as myself. When that time comes our sun will die, slowly cool and the solar system will go cold forever, but the process of a star dying is long and drawn out and won't even begin for another 5 billion years. It is important to understand that the basic building blocks of the elements have remained unchanged, that although the combination of carbon and oxygen has produced carbon dioxide there is still both carbon and oxygen in that compound.
In these cases the element oxygen has combined with the carbon and hydrogen in the compounds being burned to form the new compounds, but no new elements have been formed. oxygen) to sustain the combustion process. Yes, there are always plans - humanity has more need every year for energy and it can come from the sun.
The reaction going on in the sun is fusion - a nuclear reaction that we are only recently beginning to control. However quickly it burns, though, it is still a chemical reaction and the energy released is quite limited as a result.
What we call "fire" in the sun is, instead, a very powerful and complex nuclear reaction that has nothing to do with oxygen or even the chemical reaction we term "burning". The end is reached only when the suns core is turned into carbon - as carbon cannot be compressed further fusion will stop. He is a licensed electrician. Nice to meet you, wilderness :). We've already looked at the chemical reaction between oxygen and other elements or chemical compounds that produces light and heat, but fusion is much different.
They still had the original elements, although the different combinations of elements produced different compounds. Martie Coetser from South Africa on February 02, 2014: Absolutely fascinating! We are all familiar with fire and commonly use it for a variety of purposes, but no one on earth uses the type of "fire" that the sun uses to produce the light and heat we all depend on. Under high pressure and energy their protons combine.
When something burns, whether wood, coal or something else, it is a chemical reaction, but the sun doesn't do that. NASA is studying how fire behaves in space, performing hundreds of experiments aboard the International Space Station.
This is a chemical reaction that uses the element oxygen to oxidize other elements. I have a Hub "Big Bang Theory, Origin of the Universe: What Is the Mystery?" So, you need fire to propel your rocket, but you don’t have enough oxygen (an oxidizer) in space. So, you see, there is really no mystery as to how the sun can burn without oxygen because it doesn't really "burn" at all.
Energy = mass times the speed of light squared; that's a lot of energy when 4 million tons are converted each second! Humanity has learned to produce a fusion reaction, but only an uncontrolled one in the form of a bomb - the hydrogen bomb uses fusion in the same basic manner that the sun does. Wow. conradofontanilla from Philippines on July 31, 2012: Voted useful. The goal is to improve spaceships' fire …
That huge "fire" in the sky gives us all life, but is the sun really on fire? Dan Harmon (author) from Boise, Idaho on June 08, 2012: @RTalloni: Glad you enjoyed it, and learned something new. The campfire we all enjoy is a chemical reaction between the organic chemicals in wood and oxygen in the air. Dan Harmon (author) from Boise, Idaho on August 05, 2012: Actually, the reaction is more complex that simply combining two atoms of hydrogen to make helium, and there are several intermediate steps involved. Dan Harmon (author) from Boise, Idaho on January 29, 2018: The sun doesn't "burn" at all. When they combine, they release energy much more than that used to combine them. There is indeed a reaction taking place in the heart of our sun (and in all other stars as well) and it is one that produces vast amounts of heat and light but it is not fire. Perhaps there is a plan for all of that energy that we know very little about. The end result, though, is as you say; hydrogen becomes helium plus energy. Thanks for a truly enlightening article. One day the sun will run out of hydrogen, but even that will not stop the fusion reaction; it is possible to fuse heavier elements, including helium, into ever heavier and heavier elements. The actual process is more complicated, with several intermediate steps, but it comes down to the fact that hydrogen is changed into helium and lots of energy. The fusion that we see in our sun is the result of just such a nuclear reaction; four hydrogen atoms (an element) combining to form one helium atom (another basic element). Helium atom, with 2 protons, 2 neutrons and 2 electrons. After fusion, this is the only type of atom left; there are no hydrogen atoms. Dan has been a homeowner for some 40 years and has nearly always done his own repair and improvement tasks. Alchemist discovering Phosphorus, 1771, by Joseph Wright. Unlimited energy without pollution or waste products is something we very definitely need with our insatiable appetite for more and more energy. Elaborated are formulas that constitute the Big Bang theory. The sun "burns" with a fusion "fire", but what does that mean? What we see and feel when we light a campfire or a gas range is a chemical reaction between oxygen and other chemical compounds or elements.
Remember the alchemists of hundreds of years ago? Plus, if we ever learn to actually control the reaction the sun uses it will benefit us all a great deal. There is no hydrogen left; no compound that still contains that element. So, you see, there is really no mystery as to how the sun can burn without oxygen because it doesn't really "burn" at all.
Instead there is a nuclear reaction wherein one element changes into another, releasing huge amounts of energy as it does so. :) Seriously, though, it is interesting.
Fire cannot burn without two critical elements: a fuel (the thing that burns) and an oxidizer (which starts the burning process and keeps it going). They had discovered basic chemistry, where one compound could be changed into another, but inside the individual elements nothing had changed.
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