Interesting facts about our Universe System
*Size of the Universe*
Light travels about 3 million kilometers in one second. 3 lakhs multiplied by 3600 will be the distance light travels in one hour. And by multiplying this number by another 24, we get the distance that light travels in one day. Multiply to get an idea of the size of these numbers. And finally multiply the number obtained by 365. The number that appears will be the distance in kilometers that light travels in one year. Not a very big number!!
The second star closest to the Sun is about 4.2 light years away from the Sun. This means that even an object as fast as light would travel this distance in 4.2 years.
But these numbers are nothing compared to the vastness of the universe. Now you get the idea.
Stars are pulled together to form galaxies by gravity. A galaxy can contain hundreds of billions of stars. With the nearest star from the Sun being 4.2 billion light years away, you can imagine how far hundreds of billions of stars would be from each other. The galaxy we live in is called the Milky Way. Its diameter is 150,000-200,000 light years. This means that it will take at least 150,000 years for light to travel from one point to another on its outer boundary. The galaxies are then bound together by gravity and form galaxy clusters. A cluster can contain hundreds to thousands of galaxies. The nearest large galaxy to the Milky Way, Andromeda, is 2.5 million light-years away. Now imagine that when galaxies spread over thousands to millions of light years form a cluster, the size of the cluster will be the size of the cluster by combining the size of the galaxy and the distance between them..!!
The matter does not end here. Clusters of galaxies are also grouped into Milanese superclusters. Think about how big it will be given the size of the cluster and the distance between the clusters.
And so far we have only talked about the observable universe.
The glowing objects in the image are galaxies, not stars
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