Have you ever wondered how waves carry energy across vast distances without moving the medium they travel through? Or why the speed of light isn't quite as constant as we once thought? Let's dive into the fascinating world of waves, where light and sound intertwine, and the fabric of space-time itself can stretch and compress.
Navigating the vast cosmic ocean, humanity has always sought to understand the scale of our universe. How far away are the stars and galaxies that adorn our night sky? Let's embark on a journey to unravel this mystery, a journey that has spanned millennia and revolutionized our perception of the cosmos.