Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
i curious about how did our sun and planets form?
because if the sun and planets all formed from the same intial material, how come they are all so different from one another?
14 Answers
- holykrikeyLv 41 decade agoFavorite Answer
Forget that GOD **** this is much more likely!!!!
The most important result of physical cosmology—that the universe is expanding—is derived from redshift observations and quantified by Hubble's Law. That is, astronomers observe that there is a direct relationship between the distance to a remote object (such as a galaxy) and the velocity with which it is receding. Conversely, if this expansion has continued over the entire age of the universe, then in the past these distant, receding objects must once have been closer together.
By extrapolating this expansion back in time, one approaches a gravitational singularity where everything in the universe was compressed into an infinitesimal point; an abstract mathematical concept that may or may not correspond to reality. This idea gave rise to the Big Bang theory, the dominant model in cosmology today.
During the earliest era of the big bang theory, the universe is believed to have formed a hot, dense plasma. As expansion proceeded, the temperature steadily dropped until a point was reached when atoms could form. At about this time the background energy (in the form of photons) became decoupled from the matter, and was free to travel through space. The left-over energy continued to cool as the universe expanded, and today it forms the cosmic microwave background radiation. This background radiation is remarkably uniform in all directions, which cosmologists have attempted to explain by an early period of inflationary expansion following the Big Bang.
Examination of small variations in the microwave background radiation provides information about the nature of the universe, including the age and composition. The age of the universe from the time of the Big Bang, according to current information provided by NASA's WMAP (Wilkinson Microwave Anisotropy Probe), is estimated to be about 13.7 billion (1.37 × 1010) years, with a margin of error of about 1 % (± 200 million years). Other methods of estimation give different ages ranging from 11 billion to 20 billion. Most of the estimates cluster in the 13–15 billion year range.
In the 1977 book The First Three Minutes, Nobel Prize-winner Steven Weinberg laid out the physics of what happened just moments after the Big Bang. Additional discoveries and refinements of theories prompted him to update and reissue that book in 1993.
Until recently, the first hundredth of a second after the Big Bang was a bit of a mystery, leaving Weinberg and others unable to describe exactly what the universe would have been like. New experiments at the Relativistic Heavy Ion Collider in Brookhaven National Laboratory have provided physicists with a glimpse through this curtain of high energy, so they can directly observe the sorts of behavior that might have been taking place in this time frame
At these energies, the quarks that comprise protons and neutrons were not yet joined together, and a dense, superhot mix of quarks and gluons, with some electrons thrown in, was all that could exist in the microseconds before it cooled enough to form into the sort of matter particles we observe today.
Moving forward to after the existence of matter, more information is coming in on the formation of galaxies. It is believed that the earliest galaxies were tiny "dwarf galaxies" that released so much radiation they stripped gas atoms of their electrons. This gas, in turn, heated up and expanded, and thus was able to obtain the mass needed to form the larger galaxies that we know today.
Current telescopes are just now beginning to have the capacity to observe the galaxies from this distant time. Studying the light from quasars, they observe how it passes through the intervening gas clouds. The ionization of these gas clouds is determined by the number of nearby bright galaxies, and if such galaxies are spread around, the ionization level should be constant. It turns out that in galaxies from the period after cosmic reionization there are large fluctuations in this ionization level. The evidence seems to confirm the pre-ionization galaxies were less common and that the post-ionization galaxies have 100 times the mass of the dwarf galaxies.
The next generation of telescopes should be able to see the dwarf galaxies directly, which will help resolve the problem that many astronomical predictions in galaxy formation theory predict more nearby small galaxies.
Depending on the average density of matter and energy in the universe, it will either keep on expanding forever or it will be gravitationally slowed down and will eventually collapse back on itself in a "Big Crunch". Currently the evidence suggests not only that there is insufficient mass/energy to cause a recollapse, but that the expansion of the universe seems to be accelerating and will accelerate for eternity (see accelerating universe). Other ideas of the fate of our universe include the Big Rip, the Big Freeze, and Heat death of the universe theory. For a more detailed discussion of other theories, see the ultimate fate of the universe.
- Anonymous1 decade ago
Jamie gave you the best answer (not delving into cosmology).
Stars form through the collapse of interstellar clouds of hydrogen gas. We know this because we observe it happening now, and have modelled the process using sophisticated astrophical algorithms.
As the gas falls in (contracts), it heats up. Eventually you get a hot, dense ball of gas so hot it begins to shine. This is a protosun. For a star the size of our sun, this continues for roughly a million years. Eventually the core becomes sufficiently hot and dense for actual fusion to begin--and a true sun is born.
The solar wind then pushed the lighter elements out towards the orbit of Jupiter and beyond. That is why the inner worlds are dense and rocky, and the outer ones are all gas giants.
Whatever angular momentum was possessed by the original cloud is preserved in the disk of matter that collapses, which explains why all the planets revolve the same direction and in roughly the same plane around the sun. The planets coalesced from the same original cloud of gas and debris, which obviously had been enriched by the remants of a previous star that had blown apart. We know this because the ratios of elements in our solar system closely parallel the expected ratios produced through standard stellar nucelosynthesis and subsequent supernova heavy element synthesis.
Whether or not God orchestrated all of this remains beyond scientific exploration at the present time.
- 1 decade ago
Some basic info. There is much more to it, but here is the jist of it:
The sun contains so much material that it has sufficient pressure and temperature to initiate and maintain nuclear processes, hense it's basic properties as the sun.
The rocky planets (Mercury, Earth, Mars, Venus) are all within a particular distance from the sun that their lighter, gaseus materials (most notably hydrogen) were taken from their orbital neighborhoods in the formation of the sun. In the grand scheme of things, they are not much different in terms of what they are made of.
The outer planets (Saturn, Jupiter, Neptune, Uranus) were formed far enough away from the sun that the sun did not take their gaseus materials away from them during the formation of the solar system, hense they are all gaseus planets, and are much larger than the inner planets because the sun did not take as much of their material. Again, in the grand scheme of things, they are pretty similar as far as what they are actually made of.
Interestingly Jupiter has about 3/4 of the mass nessesary to initiate the same nuclear processes that define a sun, so it was pretty close to becoming the binary partner of our sun, but didn't quite make it.
So basically, they are all pretty much the same as far as the material they are made of, it is just that the sun is big enough to support nuclear reactions, or else it would be just like the gaseus planets, and the inner planets are too close to the sun to maintain their gaseus exteriors, so they only maintain their more dense, rocky interiors that the sun's gravity was not able to make off with.
- Anonymous1 decade ago
This is still highly debatable in the scientific community. The Big Bang thoery is the most widely accepted explanation on the creation of the universe and our planet.
The planets can be dramatically different from each other and be made from the same basic materials. Just look at cooking. There is milk in macaroni and cheese, but there is also milk in ice cream. Two very different foods but they share a common element. Our planets and sun share many of the same elements but are arranged in a very different way.
- How do you think about the answers? You can sign in to vote the answer.
- 1 decade ago
i read something online about the formation...
i am not sure if planets were all the same time.. but ive read they all form the same way.
something about a combustion and the spinning around the sun forms a sphere. At one time the moon was part of the earth and broke free after a meteor hit. it too formed a sphere
my guess is that all of the planets formed at different times
they are so very different because of their place in the solar system
christans believe god is the reason for everything
i am not an expert ..good luck
- 5 years ago
Sūrat al-Takwīr (Arabic: سورة التكوير sūrat at-takwīr, “the Overthrowing chapter”) is the 81st sura of the Qur'an with 29 ayat. It tells about signs of the coming of the day of judgement. Some of these signs include the following: a) When the sun is shrouded in darkness b) When the stars lose their light c) When the mountains are made to vanish d) When the seas boil over e) when the she camel about to give birth is left untended There is however, a striking similarity to the end of universe as predicted by scientists. e.g we know the sun will first become a red giant about 5 billion years from now and then loose slowly all light to become a brown dwarf. All stars in universe are said to go the same fate as the big freeze. before the sun becomes a brown dwarf it will definitely make all mountains on earth to vanish melting earth during its red giant stage. and will definitely cause all seas to boil over during red giant phase as well.
- 1 decade ago
God formed them.
Genesis 1:1-5 "In the beginning God created the HEAVENS and the Earth. The Earth was empty, a formless mass cloaked in darkness. The Spirit of God was hovering over the Earth. Then God said, 'Let there be light', and then there was light and God saw that it was good. And God divided the light from the darkness. God called the light day and the dark night. And there was evening and there was morning the first day."
Source(s): The Holy Bible - 1 decade ago
there are a lot of things to factor in. yes, everything is made out of the same basic elements, but some may have one thing, but not another. the best visual i can give is water. it can be a gas, liquid, frozen, but it's still water. the earth has all different kinds of rocks, but they all still came from the earth, they are just made of different elements, or they're put together different, or maybe they've been pressurized or something idk ... everything out there is just put together a little differently. i hope u get what i'm trying to say
- 1 decade ago
well, if you base them biblically, the planets and the sun were made by God.
scientifically speaking, they came from small dusts that are floating around the universe. As time went on they form a bigger particle.. and voila.. planets are made!
- Anonymous1 decade ago
EVERYTHING IS FORMED FROM THE SAME MATERIALS, including humans, and we are all different because we don't have the same exact mixture...