How many galaxies in this universes and how many stars?
See related questions:
3 people found this useful
Astronomer and science popularizer Carl Sagan used to say that there were "BIL-lions and BIL-lions" of galaxies. Now, thanks to the Hubble Space Telescope's "Deep Field" obser…vations, we know that Sagan was wrong. There are not "billions and billions"; there are "billions OF billions" of other galaxies in the universe. With every improvement in telescope technology, we can see farther and farther, and still we cannot see any end of it.
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 ther…e are 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 10 14 ).
There are over 100 billion galaxies (100 billion+ stars per galaxy)in the universe.
There are an estimated 10 11 (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 theobservable universe at distances up to 13 billion light years.That's only in the observable Universe, the part w…e can actuallysee. There are probably hundreds of billions more galaxies outthere! We will never find them all. There are billions of galaxies. New ones are forming constantly. Existing ones merge and separate forming others.
hundreds of billions
There are probably more than 170 billion galaxies in the observableuniverse. There are a lot of galaxies known in the universe. The number isuncertain. Scientists have found …over 100,000 galaxies as theycreate their 3-D map of the universe. Though, there is an estimates200 billion galaxies in existence. No one is really sure exactly how many there are. Many millionsprobably. One thing that might be useful in answering this is a 2year survey (the 2dF Galaxy Survey) which has just finished. So farthey have surveyed 100, 000 galaxies to make a 3-D map of theuniverse, but their goal is 250,000! And that's certainly not allof them that are out there.
Visible with the naked eye - about 8 to 9 depending on viewingconditions. (Not all from the same viewing spot) With estimation, anywhere between 100 and 300 billion, at dista…ncesup to 13 billion light years.
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.
The Universe is a term used to explain the size of everything there is no way to know how big or of what content it is.
There is no correct answer as most are not discovered
We guess. Really. There's no way to actually COUNT the stars in the Milky Way; the small ones are too small and dim to see if they are more than a few dozen light years away…. So we make estimates, which are little better than guesses.