Almost as old as Cher.
2007-01-08 03:37:57
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answer #1
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answered by Anonymous
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Using radiometric dating, scientists can estimate that the solar system is 4.6 billion years old. The oldest rocks on Earth are approximately 3.9 billion years old. Rocks this old are rare, as the Earth's surface is constantly being reshaped by erosion, vulcanism and plate tectonics. To estimate the age of the solar system scientists must use meteorites, which were formed during the early condensation of the solar nebula. The oldest meteorites (such as the Canyon Diablo meteorite) are found to have an age of 4.6 billion years , hence the solar system must be at least 4.6 billion years old.
The current theory of solar system formation is the nebular hypothesis, first proposed in 1755 by Immanuel Kant and independently formulated by Pierre-Simon Laplace. The nebular theory has been refined over many years and now has a great deal of evidence supporting it.
To briefly summarize, the nebular theory holds that the solar system was formed from the gravitational collapse of a gaseous cloud called the solar nebula. It had a diameter of 100 AU and was 2-3 times the mass of the Sun. Over time a disturbance (possibly a nearby supernova) squeezed the nebula, pushing matter inward until gravitational forces overcame the internal gas pressure and it began to collapse. As the nebula collapsed it began to spin faster to conserve angular momentum, and became warmer. As the competing forces associated with gravity, gas pressure, magnetic fields, and rotation acted on it the contracting nebula began to flatten into a spinning protoplanetary disk with a gradually contracting protostar at the center.
Grains of dust (silicates and metals) and ice (hydrogen compounds) condensed from the gas, and began to accrete into larger and larger clumps, forming planetesimals. Inside the frost line, planetesimals were composed of rock and metal, because those are the only grains that can condense at those temperatures, and remained relatively small because they were only 0.6% the mass of the disk. The larger icy planetesimals beyond the frost line became massive enough to capture and hold onto helium and then hydrogen gases, which caused them to rapidly grow into jovian protoplanets.
After 100 million years, the pressure and density of hydrogen in the centre of the collapsing nebula became great enough for the protosun to begin thermonuclear fusion, which increased until hydrostatic equilibrium was achieved. The young Sun's solar wind then cleared away all the gas and dust in the protoplanetary disk, blowing it into interstellar space, thus ending the growth of the planets.
2007-01-08 03:46:26
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answer #2
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answered by Brite Tiger 6
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This photograph voltaic sytem is seventy two trillions or upt seventy 8 and Earth is abode of God a checklist has been stored by the Gods or God splendid Scientists this historical Asiactic information, interior the Bible revelation call them 24 elders those God splendid Scientist s those are human beings with fairly splendid intelligents "superhuman Beings, not spooks green and grey"frabrications" are available in veraties of color(race) Black are Originators of heavens and earth and Black is generic and essence which all hues come from. Holy Quran call them Exalting Chiefs or Angelic Beings 12 important and 12 minor scientists. Out those splendid Scientist is the main splendid the final Knower call (Allah) and countless names He pass by. Honorable Elijah Muhammad with the aid of Honorable Minister Louis Farrakhan taught us that there are twenty-4 (24) sensible adult men (scientists) who do the artwork of producing Bible and Qur'an. He pronounced we make background {or Bible or Qur'an} to equivalent the circumference of our abode (Earth): one 3 hundred and sixty 5 days for each mile. So the e book it is written incorporates twenty-5 thousand (25,000) years of background written in improve. There are twelve (12) important scientists and twelve (12) minor scientists that incorporate 7 Angels or 7 Council that are God Scientists and extra. decrease back to the huge form 12 lower back. every time the time comes for a definite portion of the writing to be fulfilled, between the main scientists will communicate to somebody between the individuals. he will demonstrate to that person a element of the writing (scripture) and provide him an task or undertaking. they are actual potential at the back of univers and that they have better halves, they pass their wisdom all the way down to they babies, they have great organic powers, improve technologies different fields knowelge, existence span as much as 500 - some almost 1500, contol nature too, Very non secular and rigthoeuss(Holy)
2016-12-16 04:40:41
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answer #3
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answered by ? 3
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Between 4.5 and 5.5 billion years.
Our solar system is composed largely of the remnants of a past star which exploded in a supernova.
2007-01-08 03:38:41
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answer #4
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answered by fucose_man 5
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Genesis 1:1
2007-01-08 03:45:03
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answer #5
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answered by Anonymous
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Most astrophysicists estimate our planet to be 4-5 billion years old.
2007-01-08 03:39:45
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answer #6
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answered by jack w 6
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Around the age of the Sun: 5,000 million of years and it will last another 5,000 million years.
2007-01-08 03:41:09
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answer #7
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answered by CHESSLARUS 7
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4-5 Billion at an estimate i think...
2007-01-08 03:40:29
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answer #8
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answered by Southern Belle 3
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4.5 billion years old. pretty much the same age as the sun.
2007-01-08 05:52:51
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answer #9
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answered by M Series 3
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I'm a young earth creationist and I believe that it is about 10,000 yrs old.
2007-01-08 03:39:15
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answer #10
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answered by Anonymous
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