When the Universe Began: The Secrets Explained in 5 Minutes
If you are one of those people who have ever wanted to know the main secrets about when the Universe came into being, you are in the right place!
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As it is something totally inaccessible to 99.9% of the world's population, it is quite normal that subjects such as the Universe, the cosmos and everything related to space itself are a source of curiosity.
After all, despite the fact that we constantly receive news – which is usually released by NASA and other responsible bodies – about discoveries and new studies related to this area, everyone has had that little desire to delve deeper and better understand some of the Universe's secrets.
And that's why we're here!
Trechos da Vida may not be the biggest holder of the main secrets about the Universe and how space-time works, but we are always looking to bring more knowledge about the most diverse topics to you!
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And today the main topic is the Universe! Here, you will learn some secrets about when the Universe came into being, including points before and after the famous Big Bang.
And the best part: all in 5 minutes! Each of these secrets will be explained quickly and easily!
When did the Universe come into being?
It's impossible to create content talking about the main secrets of space without talking about when the Universe came into being, right?
After all, this is not only the central point of our content but also the starting point for the creation of the Universe as we know it today.
According to estimates by responsible scientists and scholars, the Universe emerged approximately 14 billion years ago!
What was out there when the Universe came into being?
Although it is an extremely difficult question to answer – after all, it is impossible to know for sure what really existed before the moment when the Big Bang occurred and the Universe began to form.
But still, scientists and scholars of the history of our universe have a theory that is widely accepted and that, by all indications, is the one that best represents this period.
This theory defends the idea that what existed a little before the Universe emerged was a big nothing.
This is because, before the explosion that became known as the Big Bang, space-time did not exist. In other words: it was as if nothing existed at all.
In fact, it is believed that what existed in this 'pre-Universe' was just radiation. And all this energy that existed in this period was what prevented any formation from beginning.
It was for a brief second that, with the right conditions, a 'spark' started, giving rise to the famous Big Bang.
What were the first things that were created when the Universe came into being?
Another curiosity regarding when the Universe emerged is what were the first things that emerged after the Big Bang.
You probably think that the first great emergence of the Universe would be the Sun, right? After all, it is the largest star in our solar system, isn't it?
But in reality it wasn't quite like that. In this first phase of the Universe, there were no stars or galaxies, much less living beings.
When the Universe began, all that existed was just helium, hydrogen and a lot – but a lot – of energy.
And although many people think that the first stars appeared soon after, everything indicates that the reality was quite different.
The first stars and galaxies probably only appeared about 200 million years after the Big Bang. In other words, much more time passed between the Universe and the appearance of these first stars than we imagine.
When did the first celestial bodies we know of form when the Universe began?
Now it's time to talk a little more about something that is closer to our reality: the celestial bodies that are part of our solar system.
As you saw in the previous topic, the first stars took a long time to appear. And the stars in our solar system took even longer to appear here.
Apparently, our Sun and the entire system in which the sun is inserted appeared around an impressive 4.5 billion years ago.
And the Earth? When did it appear?
If you thought the formation of the Sun and the solar system as a whole took a long time to happen, then you will be even more shocked during this topic.
In fact, if we compare the emergence of the Sun with that of the Earth, the difference is big, but nothing too scary.
According to estimates, while the Sun appeared around 4.5 billion years ago, the Earth appeared in our solar system a little later, around 4 billion years ago.
In other words: it is a difference of 'only' 500 million years, approximately.
Which is a minimal difference if we compare it to the time it took for the man to 'show his face' here and appear on our timeline.
But what about humans? Where do we fit into this timeline?
You probably remember your history classes at school, where we learned that the Earth has undergone countless changes and periods throughout its existence.
And this includes the emergence and disappearance of millions of species and organisms. This happened both because of the processes of evolution and because of geological changes that occurred over time.
And it was only after many of these changes – including even after the passage of our dinosaur friends here – that human beings appeared.
According to studies, the first men only appeared around 200 thousand years ago!
Now compare the period in which human beings have inhabited this cosmos with the time that the Universe has existed.
If we were to compare both periods in a more practical and illustrative way, it is as if the existence of the human being were a tiny second and the time that the Universe has existed were an entire year.
This just goes to show the magnitude of our Universe!
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