how many stars are present in our galaxy?
552570
"Our own Milky Way, a typical giant spiral galaxy, includes at least 100 billion stars in its diameter." \n100 billion\n\nEncyclopedia Britannica. Astronomy. 2000. "There are about 100 billion stars in the Milky Way Galaxy" \n100 billion\n\nEddington, A. S. The Interior of a Star. 1926. "The Sun belongs to a system containing some 3,000 million stars." 3 billion\n\nBoorstein, Daniel J. Discovery of the World. New York: Random House, 1983: 320. "...the Galaxy is nothing else but a mass of innumerable stars planted together in clusters."\ninnumerable\n\nButterworth, Paul. Stars in Our Galaxy. Ask a High-Energy Astronomer. 1998. "We can only see a few thousand stars at most with our unaided eyes. These are a mixture of stars which are nearby, and bright stars which are further away; but they are only a tiny fraction of the 100,000,000,000 stars in our own galaxy." \n100 billion
1007479
Yes.  Beyond our own Milky Way galaxy there are estimated to be 200 billion more galaxies in the visible universe at distances up to 13 billion light years from Earth.
604824
The astrobiology folks at NASA have calculated that there are between one and thirty billion habitable planets in our Milky Way Galaxy.  If our solar system is typical,  you can multiply that by about 10 to get total planets: between 10 and 300 billion.  \n\nSo where is everybody?
144725
Yes, almot every star we see is a star from this galaxy. Their are also other galaxies, but we see those only as other points of light, since they are so far away, and five planets that usually glow brighter than the rest of the lights. Also tthe brighter part of the galaxy is just a denser cluster of stars, and we do see it, it's the milky white band we see at night from horizon to horizon, it's called the Milky Way.
21164
4 In recent centuries astronomers who scanned the heavens with early telescopes noticed some fuzzy, cloudlike formations. They assumed that these were nearby clouds of gases. But in the 1920’s, as larger, more powerful telescopes came into use, these “gases” were found to be something far more immense and significant: galaxies.\n\n5 A galaxy is a vast group of stars, gas and other material rotating around a central nucleus. Galaxies have been called island universes, for each one of them is in itself like a universe. For example, consider the galaxy we live in, which is called the Milky Way. Our solar system, that is the sun and the earth and other planets with their moons, is part of this galaxy. But it is only a very tiny part, for our Milky Way galaxy contains over 100 billion stars! Some scientists estimate at least 200 to 400 billion. And one science editor even stated: “There could be as many as five to ten trillion stars in the Milky Way galaxy.”2\n\n6 The diameter of our galaxy spans so vast a distance that if you could travel as fast as the speed of light (186,282 miles a second) it would take you 100,000 years to cross it! How many miles is that? Well, since light travels about six trillion (6,000,000,000,000) miles in a year, multiply that by 100,000 and you have the answer: our Milky Way galaxy is about 600 quadrillion (600,000,000,000,000,000) miles in diameter! The average distance between stars within the galaxy is said to be about six light-years, or about 36 trillion miles.\n\n7 It is almost impossible for the human mind to comprehend such size and distance. And yet, our galaxy is just the beginning of what is in outer space! There is something even more staggering. It is this: So many galaxies have now been detected that it has been said they “are as common as blades of grass in a meadow.”3 About ten billion galaxies are in the observable universe! But there are many more beyond the range of today’s telescopes. Some astronomers estimate that there are 100 billion galaxies in the universe! And each galaxy may contain hundreds of billions of stars! I don't think there's an end in sight.
1053678
Well, we're all just one person out of billions of people on this little rock that orbits around the Sun; and the Sun is just one of billions of stars in our galaxy, the Milky Way, which is just one of billions of galaxies in our Universe (of which there may be an infinite amount more).  Makes you feel kinda small, huh.
3031
The universe is big enough to contain over 100 billion galaxies, of which the Milky Way is one. It is also expanding. Since it is growing larger, it can't be infinite, since infinitely-sized things can't become larger than infinity.
224500
Wikipedia claims that the observable universe contains about 7 × 1022 stars, organized in about 100 billion galaxies, which themselves form clusters and superclusters. An Ask the Scientist response to this question claimed that there are about 10 billion (10^10) stars in an average galaxy, \nand there are about 10 billion galaxies that we can observe in the universe, so the answer is 100 billion billion or 10^20. I don't think it is an issue that we have a precise answer for as yet.
1139554
Number of atoms in the universe:\n10^11 galaxies * 10^11 stars in each * 10^33 grams in each star * 6x10^23 atoms of hydrogen per gram = about 10^79 atoms.  There are probably more photons but photons are so. . . insubstantial. Neutrinos?  Well, you ever try to catch one? They are only slightly easier to find than ghosts.
437476
I think given the magnitude of space: the galaxies already discovered, the hundred billion stars in each, the number of planets revolving about them. I find it inconceivable by pure chance alone that earth is the only body with life in the entire universe. To even think so I would feel to be the utmost presumptious conceit of man.\nI even feel that with the hundred billion stars in our galaxy, life in some shape or form must exist within our galaxy in several separate locations. How many life forms at our stage of existence or beyond is another matter entirely, with the knowledge we have now how many madmen does it take to send us all to oblivion, kingdom come or whatever. All this must be thrown into the equation.How many civilisations can survive and for how long? It is my belief though that within the next couple of decades, as our listening apparatus improves by leaps and bounds, that an unmistakeable signal will come, either intentional or not has no bearing on the matter, which will answer your question once and for all. The answer will be YES.\nThere was an unconfirmed signal on 15th August 1977 never repeated, that could have come from the Sagittarius region: i.e. toward the centre of our galaxy. You never know.
556954
there are nine planets in the solar system. it is not know yet how many planets are there in the entire universe, because we just know about 3 galaxies (and still do not know about any planets in galaxies other than the milky way)
527724
All stars except the Sun appear to the human eye as shining points in the night sky that twinkle because of the effect of the Earth's atmosphere. Interferometer telescopes are required in order to produce images of these objects. The Sun is also a star, but it is close enough to Earth to appear as a disk instead, and to provide daylight.\n\nStars are not spread uniformly across the universe, but are typically grouped into galaxies. A typical galaxy contains hundreds of billions of stars. The majority of stars are gravitationally bound to other stars, forming binary stars. Larger groups called star clusters also exist.\n\nAstronomers estimate that there are at least 70 sextillion (7×1022) stars in the known universe [1]. That is 70 000 000 000 000 000 000 000, or 230 billion times as many as the 300 billion in our own Milky Way.\n\nThe nearest star to the Earth, apart from the Sun, is Proxima Centauri, which is 39.9 trillion kilometers, or 4.2 light years away (light from Proxima Centauri takes 4.2 years to reach Earth). Travelling at the orbit speed of the Space Shuttle (5 miles per second -- almost 30,000 kilometers per hour), it would take about 150,000 years to get there. Distances like this are typical inside galactic discs, where the Sun and Earth are located. Stars can be much closer to each other in the centres of galaxies and globular clusters, or much further apart in galactic halos.\n\nCheck the wikipedia link below.
475165
Us.  The Milky Way is the name of the galaxy in which we currently reside.  Aside from us, there are a lot of stars and planets and such.  There is a widespread belief that the center of the galaxy contains a black hole.
295233
there are as many as 200 billion galaxies in the observable universe
491513
During clear night, there are about 6000 (six thousand) visible stars from each hemisphere of the Earth. However, it is for sure that there is no certain way of calculating the exact number of "stars up there", because of explosions of old stars and creations of new stars, that occur almost every minute, somewhere in the universe.
72985
There are hundreds of billions of stars in our galaxy. If just one in out of every million of those had planets, and if just one of every million of those had life, and if just one of every million of those had intelligent life, then there would be literally millions of intelligent civilizations out there, just in our galaxy alone. And there are many billions of galaxies. If it is just us, seems like an awful waste of space.
670477
There are 1019203948105 Galaxies...\n3 more are to be developed next year, and will be released on the 3rd of march.\nCool isn't it?