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It is estimated that there are 10^12 galaxies in the universe, each with about 10^12 stars. Each star has an average of 10^57 hydrogen atoms; using these estimates, the number of particles in the universe would be about 10^82.

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โˆ™ 2010-02-07 07:27:13
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Q: What is the number of particles in the universe?
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Related questions

What is the number 1000000000000000000000000000000000000000000000000000000000000000000000000000000000?

Particles in the universe

How many particles are there in the universe?

Most astronomers estimate the number at somewhere between 1070 and 1090.

What is the word used for the biggest number ever?

Googolplex. However it is useless to science because it exceeds the number of particles in the universe!

How many particles are there in the whole universe?

Most astronomers estimate the number at somewhere between 1070 and 1090.

What is the purpose of particles?

Since all matter in the universe is composed of particles, one might say that the purpose of particles is to give us a more interesting universe.

What were the first particles in the universe to be formed?


How many exact particles in the universe?


What are the tiny particles that make up the universe?


How many subatomic particle in the world?

The Wikipedia lists an estimate of 10 to the power 80 hydrogen atoms for the observable Universe. The total number of particles would be somewhere in that order, depending on what "particles" you are thinking of.

Is universe a number?

Universe is not a number. it is simply everything that was ever created.

What is the fabric of the universe made of?

The universe isn't s fabric. The universe is mostly just vaccum, which is like air but with absolutley no particles. My guess is that the 'fabric' of the universe is space-time.

Where did hydrogen and helium in the universe come from?

They come from fusion of particles out of Plasma.

How many particles make up the universe?

103 <update> 107

Is there such thing as the subatomic universe?

Not in any meaningful way. There are certainly subatomic particles but they do not behave in the same manner as the universe we observe.

How an equation can be balanced even if the number of reactant particles differ from the number of product particles?

An equation can be balanced even if the number of reactant particles differs from the number of product particles. As long as the total number of atoms of each element is consistent in the products and reactants, the number of particles does not matter.

Is 1 mole of particles a very large number or a very small number of particles?

1 mole of representative particles of a substance is a very large number. It represents 6.02294x1023 particles.

What is visible universe made of?

It is made of atoms, ions, fundamental atomic particles.

Why could light not travel through the early universe?

Ionic particles are opaque.

How the particles created in your galaxy?

Basically, the particles in the Milky Way have been present from the time of the creation of the Universe, i.e., from the Big Bang.

What is the basic unit of the universe?

The atom is the basis of everything. Atoms themselves are made up of different particles, but particles are not 'solid stuff' and atoms are. Everything which we can see - unaided - in the universe, is made of atoms. Without "solid stuff" we would not be here to observe whatever universe might otherwise exist in a 'particle-only" universe.

Why physcist want to accelerat particles to higher energies?

The idea is to learn how the Universe works. Scientists hope that with higher energies, new kinds of particles will be discovered, and that these could give more clues about how the Universe works.

What is the name for 6.02 E23 particles?

That is called Avogadro's number. It is the number of particles in a mol.

What are the number of particles in an atomic nucleus?

The mass number of an atom is the number of particles (protons and neutrons) in an atomic nucleus.

What name is given to the number of particles in a mole?

The name given to the number of particles in a mole is Avagadro's number/constant

How did gravity help create the universe?

Gravity helped create the universe by pulling little dust particles together, forming everything that we know in the universe, like planets, stars, and asteroids.