As you know, the sun has been around for a while, five billion years to be exact, but have you ever wondered why we really need it? What if the sun disappeared? To be clearer, the sun will die in billions of years due to its expansion. But what I'm going to discuss in this article is: what if he suddenly disappears? Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get an Original EssayAt the exact moment the sun disappeared, we would have no idea. It takes about eight minutes for sunlight to reach Earth, so for a little over eight minutes we would have no idea. But after these words, confusion and mass panic would likely ensue. The Sun's gravitational hold on our planet would take the same time to dissipate. Indeed, gravity waves are generated at the same speed as light. So, as soon as we saw our sun disappear, the Earth would lose its orbit and fly off into space. Without the light of the moon or the sun, the entire universe would be the only source of light visible on Earth. In 2004, Abdul Ahad calculated that the Milky Way provides as much light as 1/300 of a full moon. Photosynthesis would stop immediately. This is very important because approximately 99.9% of Earth's natural productivity is provided by photosynthesis. Without the sun, plants would no longer produce vital oxygen. But don't worry. All of us, 7 billion of us, breathe six trillion kg of oxygen every year. Our atmosphere contains a quintillion kg of oxygen, meaning that even without photosynthesis it would take us thousands of years to run out of oxygen. Most of Earth's plants would die within a few days. Except for large plants though. Most trees large enough have enough sugar to live in darkness for years. Their problem is that the earth will become cold. They were freezing to death. Their blood, water and sap they contained solidified before dying of starvation. Currently, with our sun, the average surface temperature of the Earth is 14° to 15°C. Without the sun to add energy, Earth would radiate heat exponentially, meaning it would go fast at first, then slower and slower. At the end of the first week without sun, the average temperature on Earth's surface would be freezing, at 0°C. Temperatures like these happen all the time on Earth, so for the first few days or months we might get away with it, but by the end of the first year the average surface temperature would be -73°C. The chances of survival would be to move to geothermal areas, such as Yellowstone or Iceland. These places would be the only safe havens for humans on earth. Almost all life on Earth exists and depends on extraterrestrial energy, the Sun. but the earth generates its own heat. Beneath the Earth's crust, it's actually quite warm. 20% of this heat comes from the fact that when the earth formed, the mass was crushed so tightly in the middle that the pressure liquefied the rock. The remaining 80% comes from the fact that, deep in its core, radioactive elements decay, providing the energy necessary to maintain the Earth's core at 5,000°C. Anyone who has failed to secure a position in these bastions of heat or underground in a community heated by radioactive energy would like to die within the first year without sunlight. Keep in mind: this is just a sample. Get a personalized paper now from our expert writers...