Introduction: When we look up at the starry sky, have we ever thought about the question: What is the universe made of? Today, let's uncover the mystery of the universe and explore its mysteries!
1. The basic elements of the universe.
The universe is a vast and infinite space that contains all matter, energy, and events. In this wonderful system of space-time continuum, the fundamental elements of the universe can be divided into two main categories: matter and energy.
Matter is the foundation of the universe, and it includes all things that we can see and cannot see, such as planets, galaxies, gases, dust, etc. Energy is the source of power that drives the universe, and it exists in the universe in various forms, such as light energy, heat energy, nuclear energy, etc.
2. The origin of the universe.
Regarding the origin of the universe, scientists have put forward the big ** theory. According to this theory, the universe originated in an extremely hot, high-density state, and over time, the universe continued to expand and cool, forming the universe as we see it today.
In this process, matter and energy are gradually separated from the hotspot engine project, forming a wide variety of celestial bodies and cosmic phenomena. And the evolution of the universe has been continuous, constantly creating new matter and energy. 
3. The size of the universe.
The size of the universe is a staggering number. Scientists estimate that the diameter of the universe could be tens of billions of light-years away. In this vast space, there are countless planets, galaxies, and celestial bodies waiting to be explored.
However, the size of the universe is not something we can easily imagine. Even the most advanced telescopes cannot see the universe in its entirety. But it is this unknown and mystery that inspires our curiosity and desire to explore the universe.
Conclusion: The universe is a world full of mysteries and beauty. By understanding what the universe is made of, we can better understand this wonderful system of space-time continuum. Let's continue to be curious and brave to explore the mysteries of the universe!