Has the sun lived his half life or not if it is true what is the proof?
545487
The sun has lived for a long time actually the sun isn't alive but anyway stars usually live for a bout ten billion years.  they know this by looking at the history of other stars and how much they have gone out in the short amount of time  it was being studied. The sun is burning its hydrogen gas so its not a really accurate guess but its pretty close. but you wont have to worry about the sun burning out because you will already be dead for a long time.
212309
The half-lives will vary depending on the isotope.  Go to the library and look them up in "The Handbook of Chemistry and Physics" in the reference section.
419301
The sun is actually made up of hydrogen gas. The "burning" you speak of is the fusion of hydrogen in to helium, which emits extreme amounts of light and energy.
712254
you are mistaken.\nsome things are both true & eternal.\nIf it is not true, it is not eternal.\nScripture is true.
844938
The predicted figure is accurate but its accuracy depends on the size of the sample.The half life of an atomic species is an average figure based on a reasonably sized sample with a huge number of atoms. It's based upon the probability that any given atom will decay at a given time. For instance scientists can predict that a coin has a 50/50 chance of landing heads or tails when flipped. This means that if you flipped the coin 1000 times you could be reasonably certain that you would get close to 500 tails and 500 heads. This doesn't mean that if you flipped it four times you would get 2 heads and 2 tails each time. It's the same with the rate of decay. The decay occurs randomly in that scientists cannot predict when any given atom will decay anymore than you can predict exactly which flips will result in heads or tails. But the more atoms a sample has the more accurate the predicted rate of decay (half life).
728755
The Sun's current age, determined using computer models of stellar evolution and nucleocosmochronology, is thought to be about 4.57 billion years.[4]\n\nThe Sun is about halfway through its main-sequence evolution, during which nuclear fusion reactions in its core fuse hydrogen into helium. Each second, more than 4 million tonnes of matter are converted into energy within the Sun's core, producing neutrinos and solar radiation. The Sun will spend a total of approximately 10 billion years as a main sequence star.\n\nThe Sun does not have enough mass to explode as a supernova. Instead, in 4-5 billion years, it will enter a red giant phase, its outer layers expanding as the hydrogen fuel in the core is consumed and the core contracts and heats up. Helium fusion will begin when the core temperature reaches about 3×108 K. While it is likely that the expansion of the outer layers of the Sun will reach the current position of Earth's orbit, recent research suggests that mass lost from the Sun earlier in its red giant phase will cause the Earth's orbit to move further out, preventing it from being engulfed. However, Earth's water and most of the atmosphere will be boiled away.\n\nFollowing the red giant phase, intense thermal pulsations will cause the Sun to throw off its outer layers, forming a planetary nebula. The only object that remains after the outer layers are ejected is the extremely hot stellar core, which will slowly cool and fade as a white dwarf over many billions of years. This stellar evolution scenario is typical of low- to medium-mass stars.[5][6]
1122825
nope you cant prove it either way.\n\ni was watching a show on evolution yesterday though and i had an interesting thought.\n\nyou remember hearing that if earths history was an encylopedia that the history of man would only be on like that last half of the last paragraph of the last book?\n\nwell then why didnt intelligent life evolve during that whole time? \n\njust a thought.
258015
yes it was\nGod creates light and separates light from darkness, and day from night, on the first day. Yet he didn't make the light producing objects (the sun and the stars) until the fourth day (1:14-19). 1:3-5 \n\nKnowing this here is a question for you if befor got created light there was noting but darkness what does he come from?
993470
Yes, its true here's proof\n\n 1 In the beginning God created the heavens and the earth.\n\n 2 Now the earth was [a] formless and empty, darkness was over the surface of the deep, and the Spirit of God was hovering over the waters.\n\n 3 And God said, "Let there be light," and there was light. 4 God saw that the light was good, and He separated the light from the darkness. 5 God called the light "day," and the darkness he called "night." And there was evening, and there was morning—the first day.\n\n 6 And God said, "Let there be an expanse between the waters to separate water from water." 7 So God made the expanse and separated the water under the expanse from the water above it. And it was so. 8 God called the expanse "sky." And there was evening, and there was morning—the second day.\n\n 9 And God said, "Let the water under the sky be gathered to one place, and let dry ground appear." And it was so. 10 God called the dry ground "land," and the gathered waters he called "seas." And God saw that it was good.\n\n 11 Then God said, "Let the land produce vegetation: seed-bearing plants and trees on the land that bear fruit with seed in it, according to their various kinds." And it was so. 12 The land produced vegetation: plants bearing seed according to their kinds and trees bearing fruit with seed in it according to their kinds. And God saw that it was good. 13 And there was evening, and there was morning—the third day.\n\n 14 And God said, "Let there be lights in the expanse of the sky to separate the day from the night, and let them serve as signs to mark seasons and days and years, 15 and let them be lights in the expanse of the sky to give light on the earth." And it was so. 16 God made two great lights—the greater light to govern the day and the lesser light to govern the night. He also made the stars. 17 God set them in the expanse of the sky to give light on the earth, 18 to govern the day and the night, and to separate light from darkness. And God saw that it was good. 19 And there was evening, and there was morning—the fourth day.\n\n 20 And God said, "Let the water teem with living creatures, and let birds fly above the earth across the expanse of the sky." 21 So God created the great creatures of the sea and every living and moving thing with which the water teems, according to their kinds, and every winged bird according to its kind. And God saw that it was good. 22 God blessed them and said, "Be fruitful and increase in number and fill the water in the seas, and let the birds increase on the earth." 23 And there was evening, and there was morning—the fifth day.\n\n 24 And God said, "Let the land produce living creatures according to their kinds: livestock, creatures that move along the ground, and wild animals, each according to its kind." And it was so. 25 God made the wild animals according to their kinds, the livestock according to their kinds, and all the creatures that move along the ground according to their kinds. And God saw that it was good.\n\n 26 Then God said, "Let us make man in our image, in our likeness, and let them rule over the fish of the sea and the birds of the air, over the livestock, over all the earth, [b] and over all the creatures that move along the ground."\n\n 27 So God created man in his own image,\n       in the image of God he created him;\n       male and female he created them. \n\n\n\n< then we would find them as solid Rocks?>\nWe'll still have to find out.
1026223
Because even though it is a radioactive element it's half-life will be over 1/2 million years making it a stable element.  It has what is termed in physics as an 'island of stability' which describes the possibility of elements which have stable 'magic numbers' of protons and neutrons.
1023696
No there are far older stars. \nThe sun wasn't born it condensed out of nebulous gas and dust.\nThe universe is so large it is possible to see back in time ( and space) to objects like quasars that have not existed for billions of years.\nGod doesn't exist hence never said anything
1043761
Observations have shown that in fact the sun is not shrinking.  In 5 billion years from now just as it uses up its remaining hydrogen it will still be 99.9% as big as it is now.\n In 1987, several astronomers from Paris Observatory made an announcement regarding the size of the Sun that astonished their colleagues (Kippenhahn, R., 1994, pg. 163). They claimed that solar eclipse data from 1666 to 1719 showed that the Sun was 2000 kilometers larger than it is today. This amounts to a 0.3 percent reduction; and the time period, which roughly corresponds to the Maunder Minimum, seemed to be more than coincidental. However, this data was found to contain an error regarding the 1715 solar eclipse path of totality. Consequently, the Sun was the same size in 1716 as it is today, and astronomers were reassured. \n\n\nReference\nR. Kippenhahn, Discovering the Secrets of the Sun, Wiley Press, 1994.
240255
The definition of the half-life is the amount of time for half the substance to react.  \n\nWhen the last molecule (or atom) reacts, the reaction is complete.  One might argue that the half-life ends when the reaction ends.  However, for many reactions, the half-life is independent of the amount of that substance (a good example is  nuclear fission), so you could argue since the half-life doesn't change, it doesn't end.  This is really a matter of semantics.
510732
The religious answer would be that God created the sun and Adam discovered it. It certainly was not discovered by Galileo, that is just silly.\n\nThe scientific answer would be that it has been known since prehistoric times and was not discovered by any one person.
713725
Well, that's very interesting cuz if u think about it, if it's NOT alive but creates life (plants) than how could something dead create life???  How long could earth possibly live/survive without that glorious light?  Is the earth alive? Hmmmmmmmmmmm\n\nVery thought provoking, I'll have to put this question on my watch list!  It is an eternal source of power tho (like God).  So my answer must be yes than:o]
805940
The people who said it is closer to 4.5 to 5 *billion* years, are correct.\n\nThe sun is a class G star, which has a lifespan of about 10 billion years (the main part of it's lifespan ... after 10 billion years, it expands and goes through a second, larger but shorter-lived phase).  The sun is about 4.5  to 5 billion years old, which means that it's about halfway through its main lifespan.   So it will be here a little bit more than it has been here already ... which is a *very* long time.\n\nIf the earth hasn't been physically destroyed by an asteroid, or some man-made catastrophe we cannot imagine yet, I am quite sure that life will still be going strong on the earth at that time .. but that humans will be long gone.   Either we will have left after making the planet uninhabitable for ourselves, or we will have killed each other off, or we will go extinct through natural causes (like an asteroid that doesn't destroy the planet, but does wipe out most life).  But in all cases, some life forms will survive, and will do quite fine without us.\n\nEven if we blew each other to pieces with nuclear weapons, and wiped out almost all life on the planet due to radiation, some life would survive the radiation (e.g. in the deep oceans) and life would eventually bounce back ... and would begin the process of evolution all over again.  That's what life does.
1066033
Somewhere around 10 million years. This should be compared to the sun, which will last a total of 10 *billion* years.\n\nHomework?