Science, asked by zofbelinis, 1 year ago

Fire needs oxygen to burn . But In space there is no oxygen how the sun burns?

Answers

Answered by khan4
2
Burning is a chemical reaction. The Sun is too hot for such things, as no chemical compound can exist at such temperatures as are found in the Sun. 
18th Century astronomers considered the possibility that the Sun produced its heat by fire, but this was at a time when the Sun's composition was unknown,as well as its age. In fact, were the Sun made of a perfect mix of oxygen and carbon and nothing else, it would at its surrent energy output, be totally converted to CO2 in a mere 30,000 years. 
Subramanyan Chandrasekhar, a Professor at the University of Michigan, worked out how the Sun makes energy over 50 years ago, for which he became the first astronomer to win a Nobel Prize (in physics, there not being one explicitly for astronomy). In brief, four hydrogen atoms go through a series of steps which converts them to one helium atom plus energy
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