What are the Highest Level Unsolved Questions in Physics?

Physics is a fascinating field of science that has been studied for centuries. It is the study of the fundamental laws of nature and how they interact with each other. Over the years, physicists have made great strides in understanding the universe and its workings. However, there are still many unsolved questions in physics that remain a mystery. In this article, we will explore some of the highest level unsolved questions in physics and discuss why they are so difficult to answer.