When mankind looks up at the starry sky, it is doomed to our extraordinary fate.

Who Are We? Where do we come from? Like babies abandoned on the earth, human beings know nothing about their past, and we have been looking for answers for millions of years.

Although we are firmly bound to the earth by gravity, it seems that we are in a cage. But fortunately, God left us a window to the depths of the universe, a dazzling starry sky.

There, light carries information from the distant universe, travels through tens of billions of light years to reach the earth, and tells us what happened in the universe. This starry sky is more like a documentary, with stories of the universe and our own.

All the answers are in it, all we need to do is look up at this starry sky. Quadrupeds, on the other hand, spend most of their time with their heads facing the ground, and their vision is limited, which limits the breadth of their thinking.

3.5 million years ago, humans began to walk upright, which was the greatest step in the process of biological evolution. The change of walking style not only frees our hands for more complicated activities.

For example, picking, hunting, and even making more advanced and deadly tools; More importantly, walking upright completely liberates the human brain, and we have more time to observe the changes of the sun, moon and stars in the sky.

But the original intention of early humans to observe the sky was not out of curiosity or desire to explore the unknown, but to survive better. It is directly related to the development of human brain, the recognition ability of graphics and the change of production and lifestyle.

So it was not until 30 thousand years ago that humans began to appear early cave murals and began to observe the sky to record time. At this time, people wander around and live in groups, taking the earth as a bed and the starry sky as a quilt.

The sky is their calendar and guide, telling them when winter will come, when wild food will mature, and when reindeer and bison will migrate, which greatly improves human survival ability. When they come to a place with plenty of food, they will stay a little longer. Their so-called home is the whole earth.

This life of living without a fixed place and eating blood didn't end until 10,000 years ago, when people began to domesticate wild animals, settle down and plant crops, and create food with their own hands.

The beginning of the farming era also represents a new era of human observation of celestial phenomena, because by constantly looking up at the stars in our production and life, it seems that these celestial bodies moving regularly in the sky are closely related to the weather on earth.

However, the weather changes affect agricultural production, such as when to sow, when to harvest, when it will be windy, rainy and snowy, so watching the weather became a very interesting thing at that time.

After all, people at that time completely depended on the sky, but what they didn't expect was that observing the sky to guide agricultural production became the beginning of human understanding of everything in the universe, and it was doomed to our extraordinary fate.

I'm sure you've seen, whether it was 30,000 years ago or 1 10,000 years ago, people always wanted to know one thing when observing the sky, and that was what would happen. This is actually our urgent need for calendar and time measurement.

Through the ups and downs of the sun, the moon and the stars, people from different regions and cultures summed up the concepts of year, month and day, and designated their own simple calendars. Although people at that time could not accurately grasp the length of each year and month, it was enough to guide people's production and life.

In addition to making calendars, human beings are also a very imaginative species, especially our ability to recognize graphics is very strong. When observing the astronomical phenomena, we gradually summed up a very mysterious thing.

That is, the change of stars in the sky is closely related to the rise and fall of human society and even personal destiny. So a brand-new professional astrologer appeared. In fact, they can be considered as early astronomers, but their research directions are different.

At that time, the rulers also strongly supported astrology. After all, the rise and fall of the dynasty is more important than anything else. There are great differences between the east and the west in predicting astronomical phenomena. China divided the sky into 28 celestial bodies, which are called 28 stars.

Western countries have developed astrology, and more importantly, they have a deeper understanding of the laws of celestial bodies and drawn very detailed astronomical maps.

What people didn't expect at that time was the vigorous development of astrology, which laid a solid foundation for human beings to further understand the universe. People began to consciously understand the world we live in from a scientific point of view and began to build a model of the universe.

The first question before us is, how do the regular changes of the sun, moon and star city come about in the night sky? Are they going around the earth in the dark, or is it because the earth itself is moving?

On this issue, the earliest explanation was put forward by Odysseus in ancient Greece, which is called "geocentric theory". This theory adapted to the religious development at that time, and also explained the simple motion of some celestial bodies, which was accepted by most scholars at that time.

These include Aristotle and Ptolemy, who inherited and developed the "geocentric theory" and extended it to the whole universe, that is, the "earth-cosmocentric theory". This idea has ruled mankind for thousands of years, during which no one dared to question it.

However, it is not the "geocentric theory" that can perfectly explain the celestial motion observed at that time, and the retrograde phenomenon of planets has always been the pain point of geocentric theory. Later Ptolemy put forward the concept of flow wheel or even wheel to solve this problem, but at this time the motion model of planets around the earth is extremely complicated.

Although this is a wrong model of the universe, and it is the first time that mankind has seen the result of the universe from a scientific point of view, the truth is often more complicated than what we see, because it always goes against our intuition.

1300 years after Ptolemy perfected the geocentric theory, that is, 15 14 years, Copernicus questioned and challenged the authority of the church for the first time, put forward the correct model of the solar system "Heliocentrism", and published "On the Operation of Celestial Bodies" in 1543, which is considered as the beginning of modern astronomy.

1609, Galileo observed Jupiter through a telescope and found several small satellites running around Jupiter, which is enough to explain the error of geocentric theory.

Almost at the same time, another great astronomer put forward three laws of planetary motion, namely Kepler. The three laws of motion accurately describe the laws and ways of planetary motion around the sun, perfectly explain all the phenomena we see, and verify the correctness of Heliocentrism.

But Kepler also left us with a big question, that is, why do planets go around the sun? This laid a solid foundation for Newton's universal gravitation in 1687.

Newton's natural philosophy and mathematical principles not only solved all the problems in people's lives at that time, but also explained why the planets in the sky revolved around the sun endlessly. This is a rigorous and perfect mechanical system, which not only rules the earth, but also rules the sky, completely overthrowing the theological foundation for thousands of years.

Newton's theory is regarded as the beginning of modern science and the beginning of human scientific understanding of everything in the universe. In the next two to three centuries and hundreds of years, many great scientists were born one after another and put forward creative and pioneering theories, which directly led to earth-shaking changes in human society, science and technology and life.

It is no exaggeration to describe human beings entering the earth now. We not only overcame gravity and set foot on other planets, but also launched a large number of detectors to other planets. We never fully understood the earth, the solar system or even the Milky Way.

Not only that, we are still observing the universe in an unprecedented way, and even established a relatively correct model of the origin of the universe at present. Now we know the story of where we came from. All this is due to the upright walking of human beings 3.5 million years ago and the first observation of the starry sky 30,000 years ago, which doomed our extraordinary fate.