The Big Bang and the Birth of the Universe
Big Bang and Birth of the Universe The cosmos is a magical place. It covers a massive area filled with stars, galaxies, black holes, and more. Stars are huge burning balls of gas, even hotter than your hot chocolate when you forget to let it cool. Black holes are like giant vacuum cleaners in space that are so strong, not even light can escape them. Everything we see today, including us, comes from one single event called the Big Bang. Big Bang: A start from zero About 13.8 billion years ago, all the mass and energy of the universe was squeezed into something smaller than a point. Then suddenly, everything began to expand. For the first 0.0000000000000000000000000000000001 seconds (that’s 10 to the power of -34), the universe was still extremely tiny. It was just 0.0000000000000000000000000000000001 meters across and had a temperature of over 100000000000000000000000000000000000°C. That’s hot enough to vaporize metal in milliseconds. If you try writing out that number on the blackboard...