Absolute zero is the point at which the fundamental particles of nature have minimal vibrational motion. Absolute zero, theoretically, is not achievable and does not exist. But scientists are putting a lot of efforts in designing experiments trying to achieve or create absolute zero. The reason they do so is not for a predetermined end. They are not focusing on the goal of the experiment. The fun in these experiments is to find and prove whether something you don't know does exist or not. And this is the beauty of science that scientists fall in love with. Scientists continually strive to reach temperatures ever closer to absolute zero, not to achieve the impossible point itself, but because these experiments push the boundaries of physics and lead to remarkable discoveries. A phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature.