Living on Earth, we do not feel the changes on this planet. The Earth is like a brave marathon runner, dressed in a deep blue robe, running in a certain direction at an astonishing speed of 630 kilometres per second on a vast cosmic track. Yet, despite the runner's flying gait, and the scenery flying backwards, the inhabitants of our planet seem to be sitting in a static gallery, oblivious to its breakneck speed. The mystery of this is as if it were a carefully choreographed magic trick. The Earth, the runner, is so fast that it is beyond our everyday perception. Its pace is so steady that we feel no bumps or vibrations at all. Its trajectory is so smooth, as if it were a pre-set track, that we can't detect any deviation or change.
We are on top of the Earth, firmly bound by its gravity as if trapped in a giant bubble. This bubble moves as the Earth runs, preventing us from sensing the real changes in the outside world. However, when one looks up at the stars and sees those distant stars and galaxies, one can again feel a marvellous connection. Those stars and galaxies, which also run wild in their orbits, together with our Earth, make up this huge and mysterious universe.
The solar system is like a graceful dancer, dancing on the grand stage of the universe. But what it dances is not a straight line, but a winding spiral trajectory. Why is this? Originally, the dancer - the solar system, around the centre of the Milky Way this mysterious “conductor” rotation, constantly surrounded by other stars, gas clouds and dark matter, such as the “audience” The gravitational influence of other stars, gas clouds, and dark matter around the solar system makes its dance so unique that it seems to move gracefully through the waves. Even more fascinating is that scientists, like a group of attentive viewers, through the telescope this pair of “clairvoyance”, observed the solar system this dancer's other secret - is towards a mysterious target called “solar vertex It is moving slowly towards a mysterious target called the “solar vertex”. This solar vertex, like a specific location on the stage, is located in the constellation of Cassiopeia and Lyra between the two “dance partners”, is the end of the solar system dancers aspire to. This discovery makes scientists more convinced that the solar system is not aimlessly drifting in the universe but has its own goals and directions. With the solar vertex as a reference point, scientists are like having a precise map that can more clearly depict the trajectory of the solar system's movement in the universe. This dance in the universe is both mysterious and wonderful to behold.
The Earth is like a supercar speeding along the highway of the boundless universe, its speed is so fast that it can roar 630 kilometres per second, then why are we in this car, but we do not feel this amazing speed? This is because we can feel the speed of a car driving or an aeroplane taking off because of the motion of these vehicles relative to the ground. However, in the universe, the earth and everything on it are in the same system of speed and inertia, so we don't feel the earth move. It's like being on a speeding train, where the passengers don't feel the speed of the train unless they observe the view out the window or compare it to other objects.
So, even though the Earth is running fast through the universe, we are as unaware of it as if we were sitting on a smooth train. This marvellous feeling is one of the mysteries and surprises that the universe brings to us.
