"Mom, how many stars are there in the sky?" On a summer night in 30,000 B.C., a child pointed to the stars in the sky in his mother's arms and asked questions in a childish voice. The mother did not answer, but gently stroked her daughter and looked at the starry sky in the distance with her. A man dressed in animal skins came out of the cave with fire behind him, looked at the starry sky, and took out a slender wolf bone. He sat down, picked up some sharp stones, and added another one after the dense scratches of the wolf bones.

"Mom, what's time?" On a summer night in the third millennium B.C., a faint Milky Way rises over the plains of Mesopotamia, and a child sits on his mother's lap and asks questions as he looks at the twinkling stars in the night sky. The mother did not answer, but got up and took her daughter to the father. The daughter's father sat on a high mound of earth, looked at the starry sky, picked up the sharpened reed stick beside him, and carved words on a wet clay tablet, he recorded the waxing and waning of the moon and the movement of the stars.

"Mom, will there be an end to this world?" On a summer night in 2,800 B.C., a child sat beside his mother, looking at the distant starry sky and asking questions. The mother did not answer, but hugged her daughter next to her and closed her eyes, and the wind on the banks of the Nile blew away the starlight reflected in the water. On the other side, the daughter's father wiped the sweat from his forehead, buried himself again, and continued to carry the huge granite block. They wanted to build the world's greatest pyramid for their holy Pharaoh Khufu, who they believed would live as immortal as the twinkling stars in the night sky.

"Dad, how big is the sky?" One summer night in 575 B.C., five-year-old Pythagoras took his father's arm and pointed to the twinkling stars in the sky and asked. Instead of answering, his father led him to the rocks of the Aegean Sea. The waves looked dreamy in the pale moonlight, and in his father's eyes, the ocean was as big as the sky. Pythagoras looked at the starry sea and had a desire to measure the world.

"Uncle, how long have the stars been twinkling in the sky?" One summer night in 121 A.D., a child pulled Zhang Heng's sleeve and pointed to the twinkling stars in the sky, hoping that the smartest person in his eyes would give an answer. Zhang Heng did not answer, but took the child to a high platform, where there was a large bronze object that had not yet been completed. Zhang Heng gently stroked the bronze that exuded coolness and looked at the sky. In his eyes, the movement of the stars in the sky will be reproduced here, and the mystery of the stars in the universe may lie in this square inch.

"Master, when did the world begin?" One summer night in 410 A.D., a young monk sought answers from Kumarosh, who was sitting in meditation in front of him. Kumarosh did not answer, but took the pen and paper beside him, drew a dot, and continued to meditate. The little monk didn't understand, so he had to pick up the "Prajnaparamita Heart Sutra" in his hand and continue to read: "Color is not different from emptiness, emptiness is not different from color, color is emptiness, emptiness is color." In the eyes of the little monk, there is not much connection between the world, Buddhist scriptures and dots, and the night sky of Chang'an City is still starry.

"Father, what is the brightest star in the sky?" One summer night in 1054 A.D., a child pointed to a dazzling star in the southeast sky from a high castle tower and asked his armored father questions. The father did not answer, but led the child to the city wall, where a group of soldiers was loading crossbow arrows with black powder. In the general's opinion, the vision from the sky as night as day may mean that the invasion of the Liao Iron Cavalry is coming. The child is aware of his father's responsibilities, but he does not know how the stars in the sky relate to it.

"Mom, what happens when you die?" One summer night in 1257 A.D., a child innocently asked his mother a question outside the mosque in Baghdad with tears in his eyes. The mother did not answer, but took him to the cemetery outside the city, where the father of the child, who died not long ago by Mongol fire, is buried. The mother prayed with her child, and in her eyes, death was only the beginning of rebirth. In the desolate night, the moonlight shines on them, witnessing the story of death and rebirth.

"Teacher, what is the true meaning of the universe?" One summer night in 1460 A.D., eight-year-old Leonardo da Vinci was under the stars, asking curious questions to the teacher who was standing next to him to paint. The teacher didn't answer, and continued to draw his picture without saying a word, as if painting was the whole world. Leonardo da Vinci lowered his body and plucked a small flower from the grass, and he looked at the small flower nailly, counting the number of petals. Then he continued to lower his body and search in the grass blown by the summer night, as if he could find the true meaning of the universe here.

"Mom, what keeps the clock ticking?" On a summer night in 1648, five-year-old Newton sat quietly in front of a ticking wooden clock and asked his mother questions. The mother did not answer, but stood up and pushed open the window. Outside the window, the stars were shining, and the Milky Way was lying above their heads. Newton looked out the window, the twinkling stars lit up the night, and he did not understand what his mother meant, but had more questions.

"Dad, does God learn math too?" One summer night in 1711 A.D., five-year-old Ora flipped through the books on his father's desk and asked him questions about them, who were reading at night. The father did not answer, but led Ola to the creek outside the house, and then picked up a pebble and threw it into the creek. The pebbles broke the tranquility of the river, and the faint starlight appeared, and the starry sky was still bright, as if it had never changed for tens of thousands of years. Ora came to the bridge alone, looked at the reflection of the starry sky in the river, and seemed to understand something.

"Dad, why do the stars shine?" On a summer night in 1884, 5-year-old Albert Einstein asked his father who was sitting next to him in unclear words. Instead of answering, his father pointed to the dim lights on the road in the distance, and in his eyes there was not much difference between starlight and light. Einstein looked at the dim light in the distance, and then looked up at the starry sky, in his opinion, the starlight and the light must be different, but he had no way to prove it, but secretly made a wish in his heart.

"Mom, when can we go to the stars?" On a summer night in 1917, 5-year-old Feng? Braun took his mother's hand, looked at the starry sky overhead, and asked her a question. Mother touched Feng? Braun's little head pointed to the moon in the sky and said, "Perhaps, we can go to the moon first." "Feng? Braun turned his gaze to the moon in the sky, stared at it for a long time, and began to imagine wildly.

Humans have been walking upright since they looked up at the starry sky above us; From the beginning of the use of the tool, the passage of time is recorded; From the day of the birth of civilization, it began to explore propositions about time, about the starry sky, and about the universe; Also, we have been seeking the meaning of existence, the true meaning of the universe.

Who are we? Where do we come from? Where will we go? Is there an end to time? Is there a universe beyond the universe?。。。 We have not yet received an answer that we are satisfied with, and humanity still has a long, long way to go.

Let's follow the protagonist of the story to discover the truth behind the story, find the logic behind the truth, explore the mystery of time and space, pursue the meaning of existence, and start a mysterious and exciting science fiction journey with unbridled fantasy and scientific thinking.

Now, the story begins with a meteor shower at 3 a.m. on August 16, 2017.