2017.04.09

Today is Sunday.

Yesterday I went to the Planetarium of China with my wife and my son. My wife loves to watch the stars in the sky. So do my son and I. There are countless stars in the sky. The earth is just one major planet of the solar system. There were nine major planets in the solar system before, but there are eight now. Because the furthest one, Pluto, isn't one of the major planets any longer. The other seven planets are Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Naptune. Jupiter is the largest one and Mercury is the smallest one. The earth is absolutely the most beautiful one. They all rotate around the only star, the great sun, in the solar system. And the moon is the satellite of the earth. There are some interesting models teaching children the moving regulation of the celestial bodies in the planetarium.

The universe is really boundless. There are countless stars like sun in the galaxy; there are countless stellar systems like galaxy in the Virgo Cluster of Galaxies; there are countless clusters of galaxies in the universe. But by now the earth is the only stellar body that produces human beings. What an amazing universe.

And I have never seen the brilliant Galaxy. I hope I could see it one day.