what does Physics  have to do with the Milky Way Galxay?
412027
Well there's gravity between everything, nuclear physics in the fusion in stars, quantum physics in the observation of red shifted spectral lines that determines the movement of recending objects, thermodynamics in using the residual temperature to estimate the age of the universe, classical mechanics in observing the general rotation of bodies, general relativity observing light from distant stars bending around black holes... the list goes on and on
1002394
the physics that studies the interactions of everything else floating around in space.
481724
We do not.  Every single "picture" of the Milky way (other than the view into the galaxy from earth) is either a picture made by someone, or an image of another galaxy that we feel looks a lot like what we have determined outs looks like.\n\nThis is actually a big misconception, and I wish that textbooks, and other books showing images of galaxies would make more of a point in labling things "artist's conception" or some other designator.
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.
111814
The galaxy is help up by angular momentum. The star are all rotating around the center of the galaxy, although the details are different from a simple solar system, and the resulting orbits can be a tad odd.\n\nThe real question is what hold the galaxy together - and that is gravity. Gravity from all the stars, dust, and the massive black home in the center of most galaxies (including ours) and a large gravitational contribution from "missing matter."
77118
Dark matter is the same as "regular" matter in that you can detect it by it's gravitational pull on any othe matter. That's how it was discovered actually. Our Galaxy, the Milky Way, and some other galaxies spin too fast--especially the farther from the center you go-- than they should from the amount of visable matter that we can see. Therefore, it is sumized that there has to be matter that we can't see (black or dark matter) causing these faster spin rates. (At the speeds some of these stars are moving out near the visable edge of our galaxy, they would fly off into intergalactic space and leave the Milky Way forever. for some reason they don't, so the easiest way to account for that is the presence of matter we can't see--which is really weird, isn't it?)
1032061
well you think\nthere are billions of glaxies and inside those galaxyies there are billions of solar systems and inside those there are planets in each one  i havent even started to count the stars yet and it seems the possibility would be very likily
455949
everything in this universe moves. stars are parts of galaxies. for example our sun is a part of the milky way galaxy. we are in the sagittarius arm of our galaxy which rotates about its centre and as we are in one of the outer arms as the galaxy seems to rotate the sun along with its nine planets revolves around the centre of the galaxy. this is exactly what happens in other stars and star systems. secondly  all stars are round not to mention, every heavenly body is round because gravity makes them round. and the shape we concieve is just because of the phenomenon of scattering of light as the light from the stars passes through various layers of the atmospheres of different densities
70579
Interesting. I vaguely remember a "great attractor" from chaos theory, but what I find when I look it up now is that it refers to a cluster of galaxies, "in the direction of Centaurus and Hydra" where nobody is sure why they're grouped like that.\n\nHere's a direct quote from another source though which I think directly addresses what you're asking about: The galaxy rotational problem refers to the phenomenon of the descrepency between the observed rotational motion of the matter of the galactic disc from the predictions of Newtonian dynamics. (See links below and search for "12.25.I".)\n\nI think in layman's terms what they're boggling about is the "bar" shape that occurs in most galaxies, our own apparently included. A recent issue of Scientific American had a very good theory on how that occurs and why.\n\nIf I'm getting the gist of it right, they're not sure why clusters of stars occur in a semi-pinwheel pattern, since based on observed mass there simply isn't enough to cause such a structure to form or remain stable.  The theory in SciAm had something to do with a coincidence of travelling wave patterns rather than any deep dark mysteries of physics, filiments, or anything else.\n\nSee http://www.sciam.com/, October 2005 issue, p. 43, "Ripples in a Galactic Pond." Very nice article and they explained it more clearly than anything I could put together.
593070
There is a great song by Eric Idle used in the film Monty Python's Meaning of Life that talks about how many stars are in the galaxy and how far we are from galactic central point...it's catchy AND funny.\n\nIf it has to be instrumental then I would try the theme music from Carl Sagan's Cosmos...it was good and is recognizable to fans of science.
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
1028391
Our galaxy is the Milky Way.\n\nThe story I heard spoke of a Greek god who was carrying cans of milk to Mt. Olympus when he tripped and spilled the milk across the sky.  The milk became the band of stars we see splashed across the night sky.
431798
It is completely unknown, since we cannot measure it and have no examples-we dont even have any proper theories, since there is also dark energy, and we dont know which of the effects we observe are due to dark matter and which due to dark matter.  We do suspect that dark matter generates gravity, and perhaps generates and anti-gravitational force (though normal mass may also do this at large enough distance)  We also know that it does not seem to block any kind of electromagnetic wave, nor does it generate any that can be detected, so it isnt just something like dust clouds or large planets without stars.
756183
Undisputed laws of physics as we experience it in our universe.\n\nThe mutual attraction between all masses and particles of matter in the universe. In a sense this is one of the best-known physical phenomena. During the eighteenth and nineteenth centuries gravitational astronomy, based on Newton's laws, attracted many of the leading mathematicians and was brought to such a pitch that it seemed that only extra numerical refinements would be needed in order to account in detail for the motions of all celestial bodies. In the twentieth century, however, A. Einstein shattered this complacency, and the subject is currently in a healthy state of flux.\n\nNewton's law of gravitation\n\nNewton's law of universal gravitation states that every two particles of matter in the universe attract each other with a force that acts in the line joining them, the intensity of which varies as the product of their masses and inversely as the square of the distance between them.
277935
A galaxy is a huge gravitationally bound system of stars, interstellar gas and dust, plasma, and (possibly) unseen dark matter. Typical galaxies contain 10 million to one trillion (107 to 1012) stars, all orbiting a common center of gravity. In addition to single stars and a tenuous interstellar medium, most galaxies contain a large number of multiple star systems and star clusters as well as various types of nebulae. Most galaxies are several thousand to several hundred thousand light years in diameter and are usually separated from one another by distances on the order of millions of light years.\n\nAlthough so-called dark matter appears to account around 90% of the mass of most galaxies, the nature of this unseen components is not well understood. There is some evidence that supermassive black holes may exist at the center of many, if not all, galaxies.\n\nIntergalactic space, the space between galaxies, is filled with a tenuous plasma with an average density less than one atom per cubic meter. There are probably more than a hundred billion (1011) galaxies in the visible universe.
577859
Someone just added an extra "e" in it.\n\nOur Solar System is in a Galaxy called the Milky Way. The Milky Way comprises stars and other material lying within a galactic plane. Relative to the celestial equator, the Milky Way passes as far north as the constellation of Cassiopeia and as far south as the constellation of Crux, indicating the high inclination of Earth's equatorial plane and the plane of the ecliptic relative to the galactic plane.\n\nThe fact that the Milky Way divides the night sky into two roughly equal hemispheres indicates that the solar system lies close to the galactic plane.\n\nThe main disk of the Milky Way Galaxy is about 80,000 to 100,000 light years in diameter, about 250-300 thousand light years in circumference, and outside the Galactic core, about 1,000 light years in thickness. It is composed of 200 to 400 billion stars.
759202
Ok, how about this:\n\nAstronomers estimate that there are at least 70 sextillion (7×10^22) stars in the known universe. That is 230 billion times as many as the 300 billion in our own Milky Way.\n\n(shamelessly stolen from Wikepedia)