The Sun is the closest of all stars we know. Only thanks to the Sun, life as we know it exists. Light from the Sun hits the surface of the Earth, making it warm enough for living organisms to develop. Plants convert this solar energy into chemical energy and give us oxygen to breathe, so you can go to the beach and have tan. But what would happen if the sun disappeared right now? Well, I don’t know what would happen, but let me take a wild guess, it would get dark! How long would we be able to survive without the Sun? Would it be cold enough for the Russians to consider moving to a different planet? What it would be like to live on Earth without the Sun? Firstly, we would have no idea at first. Sun is 8 light minutes away from us, so after the Sun disappears, it would take 8 minutes for this good news to reach us. After these 8 minutes, a mass panic would probably start, as people try to return those solar panels, they had just installed. It would be very dark. Those on the night side wouldn’t notice anything at first, but only until the Moon disappears. God save the people who were witnessing a new moon day, that night. Following this, other planets would vanish into darkness one after another, as the last bit of reflected light would reach our eyes. Photosynthesis would stop, so plants would no longer be able to produce life-sustaining oxygen. But that wouldn’t be a problem as collectively all humans, all insects and all animals would still have enough oxygen to breathe for about another 1000 years or more. But there would be much bigger problem though, especially if you own a sunglasses shop. Also, it would be extremely cold. Without any source of heat, Earth would cool down rapidly. The only way for us and other organisms to survive would be to go underground as deep as possible. The closer we would live to the core, the better chances we would have for survival. But that would involve a lot of digging. Because of the extreme temperatures, the surface of oceans would become a giant skating rink, but only the surface. It could be possible that the liquid water would still be present, beneath this frozen layer on the surface of the oceans. Therefore, some microorganisms, those living in the places like Mariana Trench, could still possibly survive, as they don’t even depend on photosynthesis for survival. Just imagine our planet, all frozen, travelling through the universe for billions of years, still conserving what is left of life before the Sun left us. Well, a comforting fact is that the Sun will die in around 5-7.5 billion years from now, so we have plenty of time to look for a new home.