The sun is a huge hydrogen bomb. It fuses hydrogen into helium in it's core, which releases a lot of heat. It has so much hydrogen it takes 9 or 10 billion years to burn it all. You feel it because the light and infrared radiation it puts out travels through space just fine.
2006-10-18 11:41:52
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answer #1
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answered by Nomadd 7
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how the sun converts hydrogen into radiant energy, and so keeps on shining (TIME, Feb. 27, 1939). At temperatures above 15,000,000° C. (the sun's internal temperature is calculated at 20,000,000° C.), Dr. Bethe found that hydrogen atoms would attack carbon. The carbon would be transmitted into other forms, but after a series of six separate atomic conversions, it would reappear, while hydrogen atoms (of which the sun has enough to last some 12,000,000,000 years) would be consumed, leaving helium as ash. One cycle would take about 52,000,000 years, but there would be enough cycles going on all the time to keep the sun hot.
ANd the sun is so hot that is why you can feel it from so far away.
2006-10-18 11:45:35
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answer #2
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answered by luckystar53 3
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The "heat" or the energy is generated by reactions inside the sun. Some of that energy escapes and travels to Earth (and past it) as light and tiny particles. When light interacts with matter it heats the matter up, giving you an impression of heat. Distance is all relative, but in this case we're close enough to get the heat and not too close to be "fried"
2006-10-18 11:39:07
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answer #3
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answered by Mary 3
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The sun is hot because there are billions of fusion reactions happening every second. A fusion reaction is the result of two atoms literally fusing to become one atom. This produces a lot of energy, such as heat and light. Its a massive nuclear explosion.
2016-03-28 00:54:57
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answer #4
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answered by ? 4
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Mostly cos theres a huge amount of hydrogen undergoing nuclear fusion to form helium and in doing so releases energy as heat and light.
The other reason is that most things left out during the day get a bit warm, and someone carelessly left the Sun out for 4.6B years.
2006-10-18 11:39:33
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answer #5
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answered by Anonymous
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thermoneuclear fusing of mostly hydrogen and helium. since as larger elements are fused, they give off less energy, consuming more of the energy of thermoneuclear fusion. but the infrared and cosmic and other electro-magnetic waves. traveling in the sub protosphere, cause secondary emmision of the visible and infrared spectrums causing the protosphere to glow, at about 10,000 degrees. giving off the various secondary emmisions of the excited substances, at their natural resonance of wave length. causeing the various colors, and the invisible ultraviolet and infrared electromagnetic spectrums.
and the reason why we feel, the warmth is, the reconversion of the transduction of light into, heat(infrared spectrum from collision with a solid, and causing infrared flourescense) and the infrared of the sun itself being transmitted, like any other radio wave. so that the sun is actualy like a radio transmitter for the light spectrum, to transmit light waves.
2006-10-18 11:55:07
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answer #6
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answered by yehoshooa adam 3
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hydrogen...the sun is basically a burning ball of gas, but its only gas on the surface, beneath the fiery topping its a liquid and a solid at the core. dont forget the sun is massive... google will tell you how much bigger..
and we feel the heat as radiation. the heat radiates out from its source, and were just in the right place, further out, we'd all freeze, any closer and we'd all cook...
2006-10-18 11:48:05
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answer #7
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answered by Anonymous
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by nuclear fusion. G0 stars like the sun with the temp if 10,000 F!(in surface)
Sun's core: is 15,000,000 Kelvin. heat is due to presurre! about 200,000,000,000 times earth atmosphere!
Jupiter is not hot and big enough to be a star with rhe core temp of 15,000 K
Earth is only 6,700 K core temp.
2006-10-18 13:53:08
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answer #8
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answered by Jeramie L 2
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Heat
2006-10-18 11:38:34
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answer #9
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answered by guysmithdenise 3
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Nuclear fusion at the sun's core.The heat we feel on earth is the effect of this radiation travelling through space.
2006-10-18 11:58:09
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answer #10
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answered by ? 3
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