Why is the universe so big? What's the point of hundreds of billions of stars?

Existence is meaning. The meaning of the universe does not need to be defined by human beings. Only the universe can make human beings. Without human beings, the universe will hardly change. How to define the meaning of the existence of the universe with the smallness of human beings.

Time, space and matter all originated from the Singularity Big Bang 65.438+0.382 billion years ago. That's when it all started. At present, the diameter of Hubble volume is about 93 billion light years, at least several trillion light years outside Hubble volume. This means that the universe is expanding faster than light.

Observing the universe, human beings have discovered the redshift phenomenon of distant galaxies and stars and the microwave background of the universe, and can infer the early stage of the universe. Scientists believe that the original cosmic matter and dark matter were in a relatively small area, which is the origin of BIGBANG's six years. The reason why the universe is so big is because of its long development history. During the 654.38+03.8 billion years after the Big Bang, the universe was constantly enlarged due to the impact of the initial explosion and the effects of dark matter and dark energy. At present, the diameter of Hubble volume is 93 billion light years, and there are about 654.38+000 billion galaxies, and each galaxy has more than 654.38+000 billion stars.

The size of the universe is the result of observation, not that the universe is so big, but that the activities of matter, dark matter and dark energy on a large scale make the universe so big. Stars, planets, neutron stars and other celestial bodies made of matter are the result of the polymerization and contraction of matter. According to this law of material activity, the universe should be shrinking gradually;

But the universe is constantly expanding, and it can be inferred that some kind of energy is pushing the expansion of cosmic matter. This mysterious energy is called dark energy, which pushes the universe to expand until it falls apart. Dark matter is discovered when observing the operation of celestial systems such as galaxies. Although not directly observed, the existing evidence can prove the existence of dark matter. Its function is to maintain the state of galaxies with matter, so that the universe will not dissipate so quickly.

The universe itself has no consciousness and will not actively grow. All phenomena are the result of actual motion in the universe, such as matter, dark matter and dark energy. The universe will not grow by itself, but will continue to expand and grow under the guidance of some observable laws of mankind.