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Join Date: Mar 2010
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### Solar Fuel

03/16/2010 7:32 AM

From my childhood, my mind is asking that "How much of oxygen is required for SUN burning for one hour". if anyone knows explain please

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Guru

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#1

### Re: How much oxygen required for SUN burning for one hour

03/16/2010 8:12 AM

As the processes in the sun are nuclear reactions, rather than combustion that needs oxygen to sustain, the amount of oxygen needed is zero.

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#2

### Re: How much oxygen required for SUN burning for one hour

03/16/2010 8:17 AM

Hi! Thank you for your valuable message. Have a nice day

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#3

### Re: How much oxygen required for SUN burning for one hour

03/16/2010 8:18 AM

That's right, and as an aside, the rate of loss of mass, due to conversion into energy, is an impressive ~ 4.5 x 109 kg/sec.

Cheers.........Codey

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#4

### Re: How much oxygen required for SUN burning for one hour

03/16/2010 8:27 AM

Hi Codey, if its true, when will be the sun becomes Zero mass. Cheers........Shanky

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#5

### Re: How much oxygen required for SUN burning for one hour

03/16/2010 8:48 AM

Never, though its long-term future isn't bright. After gorging itself for about another billion years or so it will begin to grow brighter and expand. At some point after that it becomes a red giant, swallowing up the barren remains of the three innermost planets and then contracts to become a white dwarf.

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#6

### Re: How much oxygen required for SUN burning for one hour

03/16/2010 8:57 AM

Guru

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#7

### Re: How much oxygen required for SUN burning for one hour

03/16/2010 11:28 AM

The mass of the sun is 2 x 1030 kg, so dividing that by 4.5 x 109 comes to over 1013 years. Current age is about 1010 years, so a way to go! But in practice it will not last anywhere near that long. Another 1010 years would be good going. I believe theory says it will expand to a red giant in ~ 109 years, destroying life on Earth in the process.

But it will see you and me out!

BTW, if you want to check the 4.5 x 109 kg/sec, energy received at Earth is 1.4 kW/m2, so if you x that by the area of a sphere of radius = Earth's distance, gives total power.

Cheers........Codey

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#8

### Re: How much oxygen required for SUN burning for one hour

03/16/2010 1:34 PM

zero. the sun is not burning, it is fusing. there is no combustion on the sun. hydrogen atoms are fusing to become helium.

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#9

### Re: How much oxygen required for SUN burning for one hour

03/16/2010 4:41 PM

Jeez -and I thought solar power was green, but it turns out to be nuclear. Now what are we going to do with all that radioactive helium?