When we understand the size of one thing, we realize the smallness of another. The more we understand the vastness of the universe, the more we realize the insignificance of our existence.
The Earth is our world..
Among the billions of humans, each of us is only one.
Modern science says that there are 8.7 million species of life on Earth. Of which only one is the human race.
This Earth is only one of the smallest planets in the solar system. Another planet, Jupiter, is 318 times the size of the Earth. The Sun, which is the center of all these planets, is 1.3 million times the size of the Earth...!
The Sun is only one of the smallest stars in our galaxy, the Milky Way!
The largest star in the galaxy, VY Canis Majoris, is 200 times the size of the Sun. The size of the galaxy that contains all this is 100,000 light years. That is, if you travel at the speed of light, it will take 100,000 years to reach from one end to the other...!
The picture does not end here either.
Our galaxy, the Milky Way, is only one of ten billion galaxies. It is said that there are ten billion stars in each galaxy.
There are more stars in the sky than there are grains of sand on our earth!
How far have we come in this??
Humans have not gone beyond the planet in the hands of the Earth, the Moon.
The Voyager spacecraft, which we launched in 1977, traveled at a speed of 6200 km per hour until 2017, but it has not even been able to cross the border of the solar system!!
Now let me tell you a surprising fact.
The visible universe decorated with the lights of stars, or the observable universe, or the universe made of matter (baryonic matter), which we have explained for so long, only accounts for three or four percent of the total universe!!
So what about the rest??
The remaining 96%, which is still unknown today, is also made of dark matter, which is made of dark energy.
That is, our science has been built on only four percent of the material world. The remaining 96% remains a question mark.
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