how many galaxies are in the universe
f18c303ad0a487647826e188d3ae11b8
Galaxy Previously, as of July 2015, EGSY8p7 was the most distant known galaxy, estimated to have a light travel distance of 13.2 billion light-years away. Approximately 170 billion (1.7 × 1011) to 200 billion (2.0 × 1011), or, more recently, at least 2 trillion galaxies exist in the observable universe. Most of the galaxies are 1,000 to 100,000 parsecs in diameter and usually separated by distances on the order of millions of parsecs (or megaparsecs). The space between galaxies is filled with a tenuous gas having an average density of less than one atom per cubic meter.
d92f2982b0d238f96d9dd983d9f731b5
- Readings: Milky Way. A galaxy is a collect of stars, gas and dust bound together by their common gravitational pull. Galaxies range from 10,000 to 200,000 light-years in size and between 109 and 1014 solar luminosities in brightness. The oldest discovery of non-stellar nebula is by al Sufi in the tenth century.
ad01bc03ac07fecbf94c77f5a62fdc6c
- So far, only 60 galaxies have been discovered in the Boötes void. Using a rough estimate of about 1 galaxy every 10 million light-years (4 times farther than Andromeda Galaxy from Earth), there should be approximately 2,000 galaxies in the Boötes void.
e55dfccca7508b2aa07c453fc394c220
The Universe Everything you see, from the brightest star to the faintest galaxy, is part of the same universe. We can see things in the universe over fifteen billion light years away. A light-year is the distance light travels in one year - over 9.4 trillion (9,400,000,000,000) kilometers! That means we can see things that are over 142,000,000,000,000,000,000,000 kilometers away. The universe is a big place! Exercise 1.
2948505337e4dbbad26aa856b3047f97
From 1,000,000 to Grahamâs Number 1011 (100 billion) – This is about the number of stars in the Milky Way and the number of galaxies in the observable universe (100-400 billion)—so if a computer listed one observable galaxy every second since Christ, it wouldn’t be anywhere close to finished currently.
c6fb0f79c5104d81285786b6b72c6b61
How many stars are there in our Galaxy (Milky Way)?  (Intermediate) So, even though we cannot actually count the number of stars in the galaxy, we can estimate the number of stars in the galaxy as roughly 100 billion (100,000,000,000). It turns out that there are many more stars with mass less than the mass of the Sun than with mass more than the mass of the Sun. So, it all works out right.
20763cb8b754255cd3934392ea1d3d28
How many stars are known to exist? A small telescope will increase the number to around 100,000 stars. But this is just the beginning! The stars we can easily see are all in our corner of the Milky Way Galaxy. The entire galaxy numbers about 100 billion stars. And beyond the Milky Way are other galaxies with many shapes and sizes. Around 100 billion such galaxies are known to exist. Taking the Milky Way as an average galaxy, the total number of known stars is thus (100 billion) 2 =(10 11) 2 =10 22. These estimated stars number 10,000,000,000,000,000,000,000, when we write this number out. This figure would be pronounced as “ten billion trillion” stars.
2fa7bc517447b9e43538f4811c3b9ef1
IC 1101: The Largest Galaxy In the Known Universe IC 1101 The largest galaxy Known so Far. IC 1101 is located one billion light years away in the constellation Serpens, this is the largest galaxy in the known universe. It is enormous, it has a diameter of six million light years and a mass of over 100 trillion stars, with most of that mass in the form of elusive dark matter. astronomer Mark Brodwin said.
75dc7677f57260e765ec2b981bfb1515
How many stars do we have in our galaxy? It is approximated that every galaxy in our universe has 10^11 stars and our universe has 10^11 galaxies. So in total we have about 10^22 stars in our universe! 68 Views · Answer requested by
f19e1f65435ecda5a169ece709223671
- How many pizza's that it will take to feed 60 people will vary  depending on how hungry people are and the size of the pizza. If  you use a large pizza with 10 slices and fi … gure everyone will eat  at least 2 slices, you will need about 12 to 20 pizza's. Robin Harris.
88c16363702d60d84da939da213311f6
How Many Galaxies Are There in the Universe? When you see the sky in microwaves, it does indeed glow in all directions. That’s the Cosmic Microwave Background Radiation, shining behind all those galaxies. It turns out the Universe has 10 times more galaxies than previously estimated – 2 trillion galaxies. Not 10 times the stars or mass, those numbers have stayed the same. And, once James Webb launches, those numbers will be fine-tuned again to be even more precise. 1.5 trillion? 3.4 trillion?
4b56a794c16c648a055e8d8cb92c6fb0
- How big is the Milky Way Galaxy? The Milky Way Galaxy is our home in the existing Univers, it is a barred spiral galaxy 100,000‐120,000 light-years in diameter containing 200‐400 billion stars and at least as many planets including our solar system.
f0499e4e72a09994b809fe7d4858c46f
Galaxies in the Universe: How Many are There? By examining a very tiny portion of the sky, counting up the number of galaxies visible in that region, and then multiplying that number to account for all the regions of the sky, astronomers estimate how many galaxies there are in the observable universe.
d80d5596c567d2fb1775e8c3a1a958bf
How Many Galaxies Are There in the Universe? Since astronomers know the volume of the observable Universe, and they can calculate the density of the Universe, they know the mass of the entire Universe. 3.4 x 10^54 kilograms including regular matter and dark matter.
c2eb3806d29e07332776e5dd8441e37f
The Theory of Evolution Therefore, using a very rough estimate of a hundred billion galaxies in the observable universe, and the number of stars in our own galaxy as a reasonable average, there may be around ten billion trillion (10,000,000,000,000,000,000,000 or 1022) stars in the observable universe, or quite possibly anywhere up to 1024.
64b0a3eddee429984437576f5d0a8892
- 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!
6cfd0041442fe20870d2acb43d9bf1a6
- The galaxy was one of the billions of galaxies that existed in the universe, as well as one of six galaxies directly accessible by the time of the Galactic Empire.
a3e02aefcaf9897abc5f81cee43886a0
Galaxies There are billions of Galaxies in the Universe. Some are very small with only a few million stars. While others could have as many as 400 billion stars, or even more. There are three kinds of Galaxies, Spiral, Elliptical, and Irregular. The only difference between the three is what shape they are.
311b0133877adeeadf8da5c62be5e3d1
The galaxy The galaxy, as it was commonly referred to, was one of the trillions of galaxies in the universe. The galaxy was a vast composite of over 400 billion estimated stars and over 3.2 million habitable systems orbiting around a super-massive black hole at the heart of the galaxy. The galactic arms rotated around this black hole across a diameter of over 100,000 light years.
44901dabe1c5fdd196303de8a59a7de3
500 Billion --A Universe of Galaxies: Some Older than Milky Way The Hubble Space Telescope site estimates there are hundreds of billions of galaxies in the universe. A recent German super-computer simulation estimates that the number may be as high as 500 billion, with many older than the Milky Way.
c4973ff4bf4293f455eb772588ad10d6
- Most galaxies, and maybe all of them, harbor such a black hole. So in our region of the Universe, there are some 100 billion supermassive black holes. The nearest one resides in the center of our Milky Way galaxy, 28 thousand lightyears away. The most distant we know of lives in a quasar galaxy billions of lightyears away.
42788909a53bd851957a716fdcc05a81
How Many Stars Are In the Universe? Believe it or not, astronomers estimate there are 100 billion to 200 billion galaxies in the universe, each of which has hundreds of billions of stars. If your mind is reeling, that's OK. It's hard for most people to imagine the size of the universe.
194fb67b94e78e1d897e0725f29ab08d
Are There More Grains of Sand Than Stars? As we learned in a previous video, there are 100 to 400 billion stars in the Milky Way and more than 100 billion galaxies in the Universe – maybe as many as 500 billion. If you multiply stars by galaxies, at the low end, you get 10 billion billion stars, or 10 sextillion stars in the Universe – a 1 followed by 22 zeros.t would be like looking at our entire universe and resolving just Earth’s sun, Sol! That’s one heck of a zoom lens! Eddie Hunnell November 25, 2013, 5:50 PM. If there are already more stars in the universe than there are grains of sand on the beaches, think about how many planets there are.
8521c723d7f65a273e1119f5bc2c07dc
List of galaxies The following is a list of notable galaxies. There are about 50 galaxies in our Local Group (see list of nearest galaxies for a complete list), on the order of 100,000 in our Local Supercluster and an estimated number of about 170 billion in all of the observable universe.his is a general list of galaxies, for more specific lists, see lists of galaxies. Size (left) and distance (right) of a few well-known galaxies put to scale. This is an incomplete list that may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries.
9b05e5b95a86aaadc2513060929abfae
How Many Atoms in The Universe The visible universe is estimated to contain between 1078 and 1080 atoms. (One estimate at the higher end of the range is 4 x 1079.) This is the estimated number of atoms in the observable universe, but since we do not know the absolute size of the universe, we cannot be certain. Most of the matter in the universe is still hydrogen.
ae372041e6d7f5fff0e6dcfb847c7da1
- If 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. For 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. With this simple calculation you get something like 1022 to 1024 stars in the Universe.