How solar system works

Long, long ago—about 4.6 billion years in the past—there was no day, no night, and no Earth. There was only a massive, swirling cloud of gas and stardust drifting through the freezing emptiness of space. Slowly, gravity began to pull this cosmic dust together. At the very center of this swirling cloud, material packed so tightly that it ignited into a raging ball of nuclear fire: our Sun. Further out from the newborn Sun, leftover rocks and dust collided and melted together, eventually forming a vibrant, blue-and-green jewel of a planet. Earth was born. But it was not born to stand still. The Birth of the Great Dance As Earth formed from that swirling cosmic dust, it kept the momentum of its birth. It began to spin like a colossal top suspended in a frictionless room. Because the Sun is a fixed, brilliant spotlight in the center of the solar system, it could only ever shine its light on one side of the spinning Earth at a time. This cosmic geometry created two distinct realms that woul...

  MATRIX  Once upon a time, inside a computer that was as big as the whole wide world, there lived a boy named Neo. By day, Neo was a normal kid who went to school and did his homework. But by night, he was a computer wizard. He noticed that sometimes the world felt a little funny—like when you get a weird feeling of déjà vu , or when a video game glitches and a character walks straight through a wall. Neo spent his nights typing on his glowing green screen, looking for a legendary computer player named Morpheus , who supposedly knew the ultimate secret of the world. The Secret of the Two Jellybeans One rainy night, a cool girl with a shiny black jacket named Trinity tapped on Neo's window. "Come with me," she whispered. "Morpheus wants to meet you." Trinity led Neo to a hidden room where Morpheus was waiting. He wasn't scary; he looked like a wise martial arts teacher wearing very cool sunglasses. "Neo," Morpheus said, holding out his hands....