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7 Surprising Things About the Universe -Top Level Learning

7 Surprising Things About the Universe

7 Surprising Things About the Universe

1. How do we define our Universe- 


Our Universe is a vast expanse of space, which contains everything that exists.

It is so huge (possibly infinite in volume) that we can say that it is almost entirely empty, with small chunks of physical matter and energy - which comprise of all that is in existence.

2. When and how was the Universe born- 

how was universe born

The Universe was born approximately 14 billion years ago, in a massive explosion now called The Big Bang.

The explosion took place in just a fraction of a second and released radiation, particles and clouds of atoms, which gradually formed into stars and galaxies.

यह भी पढ़े:ई-बैंकिंग क्या है? ई-बैंकिंग के प्रकार और ई-बैंकिंग खाता

3. What were the different stages in the formation of the Universe-


Just after the Big Bang, all matter was squeezed into a tiny fireball, even smaller than an atom .

Slowly, as the fireball expanded and began to cool, the tiny particles of energy and matter formed a thick, soup-like material.

Gravity pulled the parties together and atoms joined to as gases,such as hydrogen and helium.

 The gases clumped into clouds and the soup' thinned out as the young Universe grew larger.

After some several hundred million years, the clouds began to form stars and galaxies.

4. How much Universe is big -  

how much Universe is big

No one knows that the Universe is infinitely large, or even if ours is the only universe that exists in the galaxy.

However, scientists believe that the Universe is at least 156 billion light-years wide.

They also believe that most of the matter in the entire Universe is invisible, and they call it 'dark matter'.

The observable is spread over a space at least 93 billions light years across.

5. What is a light-year- 

What is light year

Light year means that a light travel in a vacuum in 1 years. 5.88 trillion miles or 9.46 trillion kilometers distance travel in 1 year.

6.  Is the Universe expanding  - 


Yes! In the 1920s, American astronomer, Edwin Hubble made an observation that the Universe is continuously expanding, with all the galaxies rushing away from each other.

Astronomers do not know if this will go on forever. If it stops and the Universe starts to contract, the galaxies would rush towards each other.

Then, the Universe might br end in a Big Crunch,like that the opposite of the Big Bang.

This might set off another Big Bang and a brand make new Universe!

7. What is Cosmic Microwave Background radiation- 


The Cosmic Microwave Background (CMB) radiation is believed to be an effect of leftover light from the Big Bang.

These are minute temperature variations that are linked to slight density variations in the early Universe.

This faint glow fills the Universe and can be observed today with an average temperature of about 2.725 Kelvin.

The CMB radiation which believed to have given rise to the structures that populate the Universe today: clusters of galaxies, as well as vast, empty regions, was detected by two American radio astronomers - Arno Penzias and Robert Wilson - in the mid-1960s.

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