how did the milky way developed?
927930
Look up "the nebular hypothesis".  you also are confusing the Milky Way (a disk shaped system of a hundred billion stars or so of which our sun is a part) and the Solar System (our sun and its surrounding planets and other assorted detritus.)\n\nhttp://en.wikipedia.org/wiki/Solar_nebula
965379
Planet formation is still somewhat of a mystery, but astronomers believe they understand the basic process. The best explanation to be accepted by most astronomers is known as the solar nebula hypothesis. Stars are formed from giant clouds of gas and dust known as nebulae. Gravity causes the matter in the nebula to coalesce. Gravity soon causes the central part of the nebula to collapse and form a star. The rest of the gas and dust forms a flat, rotating ring around the new star. Eventually the gravity of the new star begins to pull matter towards it. Small whirlpools of spinning matter form within this disk. Gravity causes these whirlpools to aggregate into small masses known as planetesimals. These planetesimals continue growing, pulling in the matter around them. Gravity soon pulls them into a spherical shape. These small spheres may collide and merge with others as they grow in size and become what is known as a protoplanet. Sometimes, a smaller sphere of matter may become captured by a larger one and enter into an orbit, creating a moon. Over time, gravity causes the heavier elements in the protoplanets to separate from the lighter ones in a process called uniformitarianism. This forms the planet's metal core, rocky crust, and usually an atmosphere composed of gas. As the star and planets continue to grow, the dust and gas of the nebula begins to thin. Smaller chunks of condensed matter is left over in the outer regions of the disk. These form the Kuiper belt of planetoids and the Oort cloud of comets. Eventually the solar wind from the star will blow away the excess gas and dust. A new solar system has been born. The process is slow and takes millions of years. Many stars have been observed to have flat disks of matter around them. These could very well be new solar systems in the making.
138345
Just about all astronomers agree that at the center of our Milky Way Galaxy (and probably at the center of most other galaxies) lies a supermassive black hole. It probably has a mass at least 2-million times that of our Sun, and is approximately 96-million miles in diameter.\n\nThese figures come from careful observation and measurment of the motions of other objects near the galactic center.\n\nThis page has more info, plus a photo ---\nhttp://antwrp.gsfc.nasa.gov/apod/ap021018.html
923909
the creation of the solar system.  It spins in a giant disk for a few billion years as dust form planets from newborn stars.
350169
The sun was formed the same way all other stars are formed. A nebula, a cloud of gas and other particles, started to come together in a clump. This clump then got bigger and bigger until it could ignite fusion, which is the process that powers the sun. This all happened at around 4.5 billion years ago.\nThe moon, on the other hand, could have formed several ways. The leading theory is that a mars-sized object slammed into earth. The stuff that was thrown into orbit slowly coalesced to form the moon. This all happened not too long after the sun and earth were formed. Of course, all of this, the dates especially, is simply scientific theory. The only direct evidence we have are geological records. Do these theories have evidence for design? Not much. Do these theories disprove design? Not at all! Scientific theories are proven wrong all the time.
632564
The origins of stars are dust in the cosmos. All matter of mass be it solid, liquid or gas have magnetism. The attraction of one particle to another is found in the formula of Pi = infinity in accordance with The Theory of Everything \nFor a free copy of the document make your reply to Einstein@peoplepc.com
785353
Galactic collisions trigger vast starburst regions.  In other words, billions of new suns form as a result of the tidal gravitational forces of two galaxies interacting with each other.  Billions of new suns equals billions of new chances for life to form, so it is now thought that galactic collisions are no mere accidents but part of the grand design for populating the universe with life.  Such galactic interactions take hundreds of millions of years, so no video would show any actual movement.  However, you can find some great pictures of galaxies in the process of merging on NASA's website.  Our own galaxy, the Milky Way, will do a little dance with our next door neighbor galaxy, the Andromeda, in a billion years or so.  The two galaxies will do a little do-se-do and the bigger galaxy (the Andromeda) will steal a lot of the Milky Way's stars and at the same time each galaxy will erupt with billions of new blue giant suns.  Should be quite a show.
20577
"The Milky Way (a translation of the Latin Via Lactea, in turn derived from the Greek Galaxia Kuklos (meaning milky way)) traditionally refers to the a hazy band of white light across the celestial sphere, formed by stars within the disc of its namesake galaxy (the plane of the Milky Way)."\n\nThere are (unfortunately) many answers to your question:\n\n"There are numerous legends in many traditions around the world regarding the creation of the Milky Way. In particular, there are two similar ancient Greek stories, that explain the etymology of the name Galaxias (Γαλαξίας) and its association with milk (γάλα). One legend describes the Milky Way as a smear of milk, created when the baby Herakles suckled from the goddess Hera. When Hera realized that the suckling infant was not her own but the illegitimate son of Zeus and another woman, she pushed it away and the spurting milk became the Milky Way.\n\nAnother story tells that the milk came from the goddess Rhea, the wife of Cronus, and the suckling infant was Zeus himself. Cronus swallowed his children to ensure his position as head of the Pantheon and sky god, and so Rhea conceived a plan to save her newborn son Zeus: She wrapped a stone in infant's clothes and gave it to Cronus to swallow. Cronus asked her to nurse the child once more before he swallowed it, and the milk that spurted when she pressed her nipple against the rock eventually became the Milky Way.\n\nOlder mythology associates the constellation with a herd of dairy cows/cattle, whose milk gives the blue glow, and where each cow is a star. As such, it is intimately associated with legends concerning the constellation of Gemini, with which it is in contact. Firstly, with Gemini, it may form the origin of the myth of Castor and Polydeuces, concerning cattle raiding. Secondly, again with Gemini, but also with other features of the Zodiac sign of Gemini (i.e. Canis Major, Orion, Auriga, and the deserted area now regarded as Camelopardalis), it may form the origin of the myth of the Cattle of Geryon, one of The Twelve Labours of Herakles.\n\nPeoples in Eastern Asia believed that the hazy band of stars was the "Silvery River" of Heaven. Also, the stars Altair and Vega were said to be two lovers, who were allowed to meet only once a year on the seventh day of the seventh month, when a flock of magpies and crows formed a bridge over the galactic river. That day is celebrated as 七夕, (literally the Seventh Night,) called Qi Xi in Chinese, Tanabata in Japanese, and Chilseok in Korean."
344610
==\nYes Milky Way is name of our galaxy.\n\nThere are different stories behind the term Milky Way.\n\nThe most authentic and widely accepted story is the fact that Greeks thought that the band of thickly populated stars in the night sky is the path from heavens made up of milk.\n\nSome other believed the band of most stars as the path of angles or gods which has become bright like milk. \n\nThere are also some other stories. One thing common to all them is that the band of stars is a path or way so the name become milky way.
136826
I am not quite sure what your asking.\n\nWhen the star is forming, it starts out as a gigantic cloud of mostly Hydrogen. As the stellar material coalesces, the material begins to heat up and the pressure at the center of what will become the new star increases dramatically.  The material becomes denser and is pulled together by its own gravity, heating up as the pressure rises.  Gravity is working to pull the star together, and eventually the ball of gas becomes so massive, that the pressure and heat at its core are sufficient to undergo nuclear fusion.  In order to counteract the force of gravity, the Hydrogen at the stars core undergoes fusion, in the process, producing Helium and a lot of energy.  It is this energy produced from nuclear fusion at the stars core that keeps the star from collapsing in on itself.
618960
It was formed from the ring of dust and debris orbiting the sun when the sun gained enough mass to start the fusion process.  It was formed in the same way and at the same time as all the other planets.
16428
If your question is based on what you can see as well as are actually above us and that you are a young person with pupils that will dilate to ~ 7mm tops AND you are observing from a dark dark site with steady seeing conditions (very little "twinkling" of the observed stars)...I think around 15,000 "bright" (we won't get into "limiting magnitude" as that is a large variable) stars is a safe guess. However, technically due to the fact that the as you look towards the constellation Sagittarius in the summer from the N. hemisphere you are looking towards the center of the Milky Way (our galaxy name). That  splash of "cloud" is the combined light of (as C. Sagan would say) "billions and billions" of stars.\nThat latest estimation of our sister galaxy Andromeda is upwards of 300 billion stars alone (it's number of orbiting stars that are influenced and follow it's spin has just recently been upped quite a bit). The current estimate for the Milky Way is 250 billion...however it has also recently been re-classified as a "barred spiral" and no longer a pinwheel shape like "whirlpool spiral". So...who knows a re-estimation of it's star number content may change.\nIn general most galaxies average out to have between 200 - 300 billion stars.\n\nNow...if we take all the assumptions mentioned above (about your eyes, seeing conditions etc) and we add to the number 15,000 of bright individually distinguishable stars in the Milky Way and the number of stars represented by the glow of the Milky Way and the number of stars in the Andromeda galaxy (which a kids good eyes should be able to see ...no sweat) well then the number you can see goes...WAY UP... Carl Sagans answer is an understatement.
887103
Most heavenly bodies were created from dust and small material. There are gravitational forces, however small, between these materials. \n\nAs the materials are attracted to each other by gravity, a "gravitational well", or deformation of space, occurs, much like the water in a draining sink. The material begins to spin "downward" toward the center of the gravitational well.\n\nThe paths of the materials begin to form a rotational pattern. Over eons, the materials join together to form larger masses. These masses eventually form the heavenly bodies. Depending on how much material is present, various types and sizes of heavenly bodies are created (e.g. stars, planets, galaxies). The rotational momentum from the early formation continues as the bodies get larger, thus the spin.\n\nHope this helps!
820102
Well, we know that the galaxy is rotating, if for no other reason than by analogy with other galaxies we see in the universe which we can see rotating.  Moreover, we more or less know the basic shape of the galaxy, which is a rotating disk of stars with a central ball shaped bulge of stars (which also rotates, but the important thing here is the disk).  Additionally we can infer from observations that whatever the center of the galaxy is, we're not it.  :)\n\nUsing the doppler shifts of light, we can tell how fast other stars or clouds of dust in the galaxy are moving with respect to us (but only in the sense that this would be the speed if the star/dust was moving directly towards or away from us).  So, you measure the speed of things around the disk of the galaxy, and there will be four directions in which the speed you measure will be zero.  The final thing we do is look to see which direction has more "stuff".  The direction with more stars and dust (and the central bulge too) is the one which is the center of the galaxy.\n\nNow, if you're wondering why you just wouldn't look for the central bulge or the direction with more stars and dust, well, this will give you the general direction of the galactic center, but it's not very precise.  It's the astronomical equivalent of saying, "It's over that-away".  To get something more precise and exact, you need to do something else, which could be what I was saying above.  Above you would get four pretty precise and exact directions separated by 90 degrees on the sky, and all that's left is to tell which one is towards the center of the galaxy, which is when you fall back on the obvious method as the way to pick between the four more precise answers.  Basically, if you had a big compass engraved on a stone on the ground without any directions marked, having someone tell you that "North is that-away" gesturing in some direction will tell you which of the directions on the compass is north.\n\nOne interesting thing to note is that today our telescopes have improved to the point where we can take pictures of the center of the galaxy and see stars moving around it very quickly.  If we didn't know where the center of the galaxy was and had those pictures we could make a pretty good guess and say that that's where the center of the galaxy is.
13860
All the objects in the Milky Way Galaxy orbit their common center of mass, called the Galactic Center. It includes the constellations Sagittarius, Scorpius, Ophiuchus and Scutum. For a great link that gives you a lot of specifics, including a map of the center check the sources below.
964790
The Greeks came up with the name which in English is "Milky Way", but every culture had a name for it -- it's pretty conspicuous, after all.  \n\nThe Greek story is kind of goofy, but this is it: the goddesses Athena and Hera (goddesses of wisdom and married life, respectively) were out for a walk and came across what seemed to be an abandoned infant.  (Actually, it was the just-born Herakles [Hercules in Latin], whose mother Hera hated.  Athena had planted the child there.  Now go on with the story:)\n\n"Oh, the poor thing!" said Athena.  "Come, Hera, give it your breast!"  For Hera, being the Great Mother, was constantly in milk even though she herself was seldom pregnant.  Anyway, she did so, and Herakles sucked her nipple so powerfully that she yelped with pain and pulled him away.  When she did so a spurt of her milk flew into the sky and that's what caused the Milky Way.\n\nWell, I told you it was a goofy story, didn't I?  BTW a mouthful of the goddess' milk was enough to make Herakles immortal, so Hera never did manage to off the poor guy, though she made his life miserable.
845717
An international team of astronomers from France, Italy, the UK and Australia has found a previously unknown galaxy colliding with our own Milky Way. This newly-discovered galaxy takes the record for the nearest galaxy to the centre of the Milky Way. Called the Canis Major dwarf galaxy after the constellation in which it lies, it is about 25000 light years away from thesolar system and 42000 light years from the centre of the Milky Way. This i closer than the Sagittarius dwarf galaxy, discovered in 1994, which is also colliding with the Milky Way. The discovery shows that the Milky Way is building up its own disk by absorbing small satellite galaxies. The research is to be published in the Monthly Notices of the Royal Astronomical Society within the next few weeks.\n\nThe discovery of the Canis Major dwarf was made possible by a recent survey of the sky in infrared light (the Two-Micron All Sky Survey or "2MASS"), which has allowed astronomers to look beyond the clouds of dust in the disk of the Milky Way. Until now, the dwarf galaxy lay undetected behind the dense disk. "It's like putting on infrared night-vision goggles," says team-member Dr Rodrigo Ibata of Strasbourg Observatory. "We are now able to study a part of the Milky Way that has been previously out of sight".\n\nThe new dwarf galaxy was detected by its M-giant stars =AD cool, red stars that shine especially brightly in infrared light. "We have used these rare M-giant stars as beacons to trace out the shape and location of the new galaxy because its numerous other stars are too faint for us to see," explains Nicolas Martin, also of Strasbourg Observatory. "They are particularly useful stars as we can measure their distances, and so map out the three-dimensional structure of distant regions of the Milky Way disk." In this way, the astronomers found the main dismembered corpse of the dwarf galaxy in Canis Major and long trails of stars leading back to it. It seems that streams of stars pulled out of the cannibalised Canis Major galaxy not only contribute to the outer reaches of the Milky Way's disk, but may also pass close to the Sun.\n\nAstronomers currently believe that large galaxies like the Milky Way grew to their present majestic proportions by consuming their smaller galactic neighbours. They have found that cannibalised galaxies add stars to the vast haloes around large galaxies. However, until now, they did not appreciate that even the disks of galaxies can grow in this fashion. Computer simulations show that the Milky Way has been taking stars from the Canis Major dwarf and adding them to its own disk - and will continue to do so.\n\n"On galactic scales, the Canis Major dwarf galaxy is a lightweight of about only one billion Suns," said Dr. Michele Bellazzini of Bologna Observatory. "This small galaxy is unlikely to hold together much longer. It is being pushed and pulled by the colossal gravity of our Milky Way, which has been progressively stealing its stars and pulling it apart." Some remnants of the Canis Major dwarf form a ring around the disk of the Milky Way.\n\n"The Canis Major dwarf galaxy may have added up to 1% more mass to our Galaxy," said Dr Geraint Lewis of the University of Sydney. "This is also an important discovery because it highlights that the Milky Way is not in its middle age - it is still forming." "Past interactions of the sort we are seeing here could be responsible for some of the exquisite detail we see today in the structure of the Galaxy," says Dr Michael Irwin of the University of Cambridge.