The most powerful forces in the universe are the ones you can’t see. 🔭 Gravity, magnetism, the strong nuclear force—these silent architects bind the chaos into the cosmos. We are just stardust held together by invisible whispers. #space #galaxy #StarsEverywhere #NASA #universe | Universe Wonders

Even though physicists have been studying gravity for hundreds of years, it remains a source of mystery. In this video, we explore why this force is so perplexing and why it remains difficult to understand how Einstein’s general theory of relativity fits together with quantum mechanics. | Scientific American