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How many galaxies in this universes and how many stars?
It has been suggested that "the total number of stars in the universe is greater than all the grains of sand on all the beaches on Earth." There may be more stars, as there a…re likely more than 170 billion galaxies in the observable universe, and there may be considerably more we cannot see. Galaxies have been observed that have as few as tens of millions of stars and as many as a hundred trillion stars (1 x 1014).
Wikipedia reports "probably more than 170 billion" galaxies in the universe. The number could easily exceed 200 billion.
There are an estimated 1011 (100 billion) galaxies in the observable Universe. It is not known how much bigger the Universe is, compared to the observable part.
There are probably more than 100 billion (1011) galaxies in the observable universe at distances up to 13 billion light years. That's only in the observable Universe, the …part we can actually see. There are probably hundreds of billions more galaxies out there! We will never find them all. There are billions of galaxies. New ones are forming constantly. Existing ones merge and separate forming others.
Astronomer Carl Sagan, in his TV series "Cosmos", said "BIL-lions and BIL-lions of galaxies". His exaggerated pronunciation of this phrase attracted a lot of attention, and no…t a little mockery. In truth, however, Sagan was wrong. After the launch of the Hubble Space Telescope, and after the Space Shuttle mission that repaired its defective lens, NASA scientists aimed the Hubble toward an entirely blank area of space, and captured a series of photos of what was in that completely empty area of the sky. The resulting images, called the Hubble Deep Field, revealed that in that "empty" spot in the sky, there were thousands of galaxies. Further observations have confirmed that there are not "billions AND billions" of other galaxies; there are "billions OF billions" of other galaxies. There is no way to come up with even an approximate answer. Whatever number you can come up with, there are probably a hundred times more. Follow the link below to the Hubble Deep Field image. There are no stars there; EVERYTHING in that photo is another galaxy. The approximate size of the image is a little smaller than a pinhead held at arms length. answer2: There are roughly 10 trillion (10x10E12) galaxies
hundreds of billions
There are probably more than 170 billion galaxies in the observable universe. There are a lot of galaxies known in the universe. The number is uncertain. Scienti…sts have found over 100,000 galaxies as they create their 3-D map of the universe. Though, there is an estimates 200 billion galaxies in existence. No one is really sure exactly how many there are. Many millions probably. One thing that might be useful in answering this is a 2 year survey (the 2dF Galaxy Survey) which has just finished. So far they have surveyed 100, 000 galaxies to make a 3-D map of the universe, but their goal is 250,000! And that's certainly not all of them that are out there.
Visible with the naked eye - about 8 to 9 depending on viewing conditions. (Not all from the same viewing spot) With estimation, anywhere between 100 and 300 billi…on, at distances up to 13 billion light years.
an infinite number
at least 100 billion or more.
Actually a galaxy is in a universe
The universe is bigger than a galaxy. If we reword the question to read "How many galaxies are in the universe?", the answer would be hundreds of billions.
There is no correct answer as most are not discovered
The answer has to be estimated; for many reasons no one can ever know the exact numbers, whatever that might mean in this context. Estimates of the number of galaxies in the u…niverse range from about 170 billion to one trillion. One trillion is one thousand millions. Estimates of the number of stars range from around 70 sextillion to 300 sextillion. Seventy sextillion is 7 followed by 22 zeros. 300 sextillion is 3 followed by 23 zeros. Some estimate as high as 10 to the power 24, which is one followed by 24 zeros. You might think that 22, 23 and 24 are small numbers here, until you begin to consider that every single one of them represents a power of ten. The number is far beyond anything that any human mind can grasp on anything close to a practical level.