What is the most interesting unsolved problem about space?

For ordinary people, science sounds too horrible and heartless. It is difficult to understand its importance. Most of us only know Newton's apple story and Einstein's famous E = MC 2. Science, like philosophy, is still obscure and detached. When most of us are not interested in science in middle school, whenever we look at the starry sky, we can't help but wonder how elegant the universe we live in. We are almost incredibly lucky to exist in this universe in almost every imaginable way. You and I, even the calmest manatee, are just impurities in this beautiful and simple universe.

Nature is full of mystery. Over the years, many curious, intuitive and curious minds have been trying to solve the mystery of the universe we live in. This will only lead to deeper problems. As Stephen Hawking said, "Look up at the stars, not down at your feet." Try to understand what you see and wonder what makes the universe exist. Curiosity "Many of us are surprised by the wonder and beauty of the universe. Each of us has an explorer in our heart, trying to achieve our goals, but often knowing nothing. It's time for us to go deep into the unknown.

It is much easier to appreciate nature than to understand its mystery. The strangeness of nature is accompanied by its amazing rationality; Randomness and orderliness complement each other, and the micro-behavior and macro-behavior of our world coexist. In this article, I listed some of the most wonderful discoveries about our universe, trying to understand the beauty of science and nature.

Quantum incredible:

Quantum mechanics is a hot issue in science and philosophy. QM is considered as the gateway to the world of consciousness. Sometimes, the whole concept is so strange because it points out that everything is true unless we observe it. There is no moon unless you really go to see it. We create reality through observation. Quantum mechanics is not an abstruse concept that comes out of thin air. Even in this absurd situation, QM still drives one-third of the world economy.

Time four-dimensional life:

A whole generation is in awe of Einstein's theory of space, time and the structure of the universe. He proved that the universe we live in is not exactly the same as what we experience every day. He said that we live in a four-dimensional world, which is composed of regular three-dimensional space plus time, that is, the fourth dimension. Time is a complicated concept. We don't experience it in our daily life. Let's have a look. Sirius is the brightest star in the sky, 8.6 light years away, or 86 trillion kilometers, which means that Everbright, which started from Sirius, began its journey about 8.6 years ago.

What we are seeing now is the astrology of 8.6 years ago. Moreover, if you walk fast, time will slow down for you. Just as you move at the speed of light, you won't be old. For any particle that is faster than light, time will go back (still waiting for the judgment of the particle that is proved to be faster than light).