how many galaxies exist? can you name them? in which galaxy does our solar system exist? what are a g?
362021
We can only give a rough guess as to how many galaxies there are, and it's billions at least. All but the closest ones visible as galaxies to the naked eye have names. Our local galaxy is the Milky Way, which you can see in a dark place on a clear night as a streak of stars running across the sky. A cluster is a group of galaxies.\n\nSome galaxies we have discovered with Hubble and other new telescopes seem to crashing into each other, and the Milky Way may be on its way to having a galactic interloper in the far future.
73499
The farther we look into the universe with telescopes like Hubble and others, the more galaxies we see. I read a very interesting fact in an astronomy magazine recently that said it is estimated that if you hold your thumb out at arms lenth, close one eye and look at the top of your thumb nail, you are covering up an estimated 240,000 galaxies with your thumb regardless of what direction you look!!!!!! Each galaxy might have an average of 100 to 200 billion stars in them! I have no idea for the estimate of sand grains on every beach in the world-maybe that would be a good question to ask separately in the geography section- but I'm positive that there are quite a bit more stars than sand grains. Good luck!
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.
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.
440062
The universe contains approximately  200,000,000,000,000,000,000 (200 BILLION BILLION) stars in galaxies scattered throughout the universe.  Our solar system is located in one of the spiral arms of the Milky Way galaxy.  The Milky Way galaxy contains approx. 200,000,000,000 stars.  \n\nThe universe is the largest of the three organizational structures in your question.  \n\nHope this helps!
1037220
There are definetly more than nine planetes in the solar system.There are many discovered by scientists and many more are yet to be found. And it is suggested that there are many more solar systems in the milky way.
763882
A galaxy is a swirling collection of stars. our own Milky Way galaxy contains hundreds of billions of stars, of which our sun is only one amongst these billions and billions.\n\nA solar system is just a single sun that has planets revolving around it. A galaxy is made up of billions of such suns. And some scientists believe that as many as 25% of the stars could have planets. That means billions and billions of solar systems in our own galaxy.\n\nHere'a a picture of our closest neighbor, the Andromeda galaxy. It has close to one-trillion stars.\n\nHope this heolps. Cheers\n\nhttp://en.wikipedia.org/wiki/Andromeda_Galaxy
171357
Unfortunately we do not have any concrete evidence.  Here is a good quote by the late Carl Sagan:\n\n"There are some hundred billion (1011) galaxies, each with, on the average, a hundred billion stars. In all the galaxies, there are perhaps as many planets as stars, 1011 x 1011 = 1022, ten billion trillion. In the face of such overpowering numbers, what is the likelihood that only one ordinary star, the Sun, is accompanied by an inhabited planet? Why should we, tucked away in some forgotten corner of the Cosmos, be so fortunate? To me, it seems far more likely that the universe is \nbrimming over with life. But we humans do not yet know. We are just beginning our explorations. The only planet we are sure is inhabited is a tiny speck of rock and metal, shining feebly by reflected sunlight, and at this distance utterly lost."
519556
a galaxy is a group of stars, consisting of a few hundred million or more, depending on their size.\n\nour galaxy is called the milky way, and the nearest galaxy is the andromeda galaxy
364385
Stars are not scattered randomly through space, they are gathered together into vast groups known as galaxies. The Sun belongs to a galaxy called the Milky Way. Astronomers estimate there are about 100 thousand million stars in the Milky Way alone. Outside that, there are millions upon millions of other galaxies also!  \n \n  \n \n \n Hipparcos mapped millions of stars in our galaxy, but how many more are there? \nIt has been said that counting the stars in the Universe is like trying to count the number of sand grains on a beach on Earth. We might do that by measuring the surface area of the beach, and determining the average depth of the sand layer. \n\nIf we count the number of grains in a small representative volume of sand, by multiplication we can estimate the number of grains on the whole beach. \n\nFor the Universe, the galaxies are our small representative volumes, and there are something like 1011 to 1012 stars in our galaxy, and there are perhaps something like 1011 or 1012 galaxies. \n\nWith this simple calculation you get something like 1022 to 1024 stars in the Universe. This is only a rough number, as obviously not all galaxies are the same, just like on a beach the depth of sand will not be the same in different places. \n\nNo one would try to count stars individually, instead we measure integrated quantitites like the number and luminosity of galaxies. ESA's infrared space observatory Herschel, to be launched in 2007, will make an important contribution by 'counting' galaxies in the infrared, and measuring their luminosity in this range - something never before attempted.
571200
The Orion Arm is the arm of the Milky Way galaxy that our solar system is in  (The arms of the Milky Way are named after constellations).  No galaxies to be found there.  The constellation Orion does have arms, but they are not well-defined, so one couldn't find a number of galaxies in that either.  The constellation Orion is well-defined, and one could in principal find the number of galaxies there.  I don't know what that number is.  \n\nFor a diagram showing the Orion arm and the other arms, see:\n\nhttp://en.wikipedia.org/wiki/Orion_Arm\n\nThere's also an "Orion's Arm" fictional world-building project, but I don't think that's what you mean:\n\nhttp://www.orionsarm.com/main.html
777198
the Milky Way is a galaxy
24776
da name uh da galaxy is da Milky Way.. in..
515493
The galaxy is everything you see at night when you look up in the sky. Stars, planets, moons, asteroids, meteors, comets, or any other terrestrial body. I think there's just one black hole at the middle of the galaxy.
789137
Galaxies are a collection of billions of star systems (like our solar system) all rotating about one central mass, called the galactic center.   They are the largest "structures" in the universe, and there are as many galaxies out there as there are stars you can see in the night time sky.
772685
largest galaxy--\n\nThe Andromeda Galaxy (IPA: /ˌanˈdrɒmədə/, also known as Messier 31, M31, or NGC 224; older texts often called it the Andromeda Nebula) is a barred spiral galaxy approximately 2.5[2] million light-years away in the constellation Andromeda, which lies in the northern hemisphere of the sky.\n\nAndromeda was believed to be the largest galaxy of the Local Group of galaxies, which consists of the Andromeda Galaxy, the Milky Way Galaxy, and the Triangulum Galaxy, and about 30 other smaller galaxies. Due to recent findings based on improved measurements and data, scientists now believe that the Milky Way contains more dark matter and may be the most massive in the grouping.[5] However, recent observations by the Spitzer Space Telescope revealed that M31 contains one trillion (1012) stars, greatly exceeding the number of stars in our own galaxy.[6]\n\nThe Andromeda Galaxy is easily visible to the naked eye in a moderately dark sky, though such a sky is available only in smaller towns and isolated areas reasonably far from population centers and sources of light pollution. It appears quite small without a telescope because only the central part is bright enough to be visible, but the full angular diameter of the galaxy is seven times that of the full moon.
313861
YES. There are many stars in our galaxy with solar system formed.