# How Do We Calculate The Atomic Number Of Our Galaxy

## How do we calculate the atomic number of our galaxy?

The milky way, our galaxy, is home to 100 to 400 billion stars. Our galaxy contains approximately (1 point 2 1056) (2 1011) = 2 point 4 1067 atoms if we take this to be 200 billion or 2 1011 stars, and if we assume that the size of our sun is reasonable on average. There are at least 100 billion stars in the milky way, our home galaxy, and at least 100 billion galaxies in the observable universe. There would be 10 trillion billion billion (or 10 sextillion) stars in the observable universe if galaxies were all the same size.According to one of these estimates, the observable universe contains between 100 and 200 billion galaxies. There are 2 trillion galaxies in the universe, according to estimates made by other astronomers who attempted to count missed galaxies in earlier studies.According to one such estimate, the observable universe contains between 100 and 200 billion galaxies. There are 2 trillion galaxies in the universe, according to estimates made by other astronomers who attempted to account for missed galaxies in earlier studies.A hundred to four hundred billion stars make up our galaxy, the milky way. We can determine that our galaxy contains approximately (1.

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## How many atoms are there in the universe, exactly?

The number of atoms in the known universe is equal to 1080 when you multiply the number of atoms per star (1057) by the estimated number of stars in the universe (1023). A human body weighing 154 pounds (70 kilograms) is made up of 7 billion billion billion atoms, which is a 7 followed by 27 zeros.Atoms are incredibly tiny. Even with the most potent microscopes, they are so small that it is impossible to see one with the naked eye.He would contain approximately 3,000,000,000,000,000,000,000,000,000 atoms (3*1027 is how scientists often write large numbers like that). Simply put, that is three followed by 25.Because atoms and molecules are so small, counting individual ones can be challenging. We can measure a large group of them’s mass instead of physically counting each one. We can determine our number of atoms or molecules if we know the mass of just one.The number of atoms in the human body is roughly 1 trillion trillion trillion (1027).

## The universe of humans contains how many atoms?

There are 1082 atoms in the observable universe as a result. That is equivalent to 10,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 atoms, to put it in perspective. Unprecedented Quantum Experiment Shows 2,000 Atoms in Two Places at Once. In a previously unheard-of manner, the new experiment revealed an odd quantum effect from the double-slit experiment. Quantum physics allows giant molecules to exist in two locations simultaneously.

## What makes up 90% of the universe’s atoms?

Today, hydrogen is thought to make up 90% of all atoms in the universe and is crucial to the physical universe. That includes us, as nearly two-thirds of the atoms in our bodies are hydrogen. The most prevalent element in the universe, hydrogen, which makes up about 75% of all ordinary matter, was created during the Big Bang. The element helium has a nucleus made up of two protons and two neutrons, which is encircled by two electrons. It typically takes the form of a gas.According to Encyclopedia. However, according to Nyman, there are still roughly ten times as many hydrogen atoms as helium. She went on to say that oxygen, the third most prevalent element, is 1,000 times less common than hydrogen.Only hydrogen and helium atoms make up nearly 98 percent of the universe’s mass. The reason for this is that stars like our sun and the majority of other stars in the universe are made up of these two substances.Hydrogen. About 70% of the universe is still made of hydrogen, which was produced during the hot Big Bang but depleted by stellar fusion.Scientists have never seen more than 80% of the material that makes up the universe. Without it, the behavior of stars, planets, and galaxies would be illogical, so we can only assume that dark matter exists.