Have you ever pondered the possibility of an advanced civilization thriving on Earth before humans? With 99% of all species that have ever existed now extinct, it raises an intriguing question: Could humans be the sole intelligent species to have evolved in the vast expanse of Earth's history?
Have you ever gazed up at the night sky and wondered about the distances to the stars and galaxies? Imagine a galaxy so far away that its light took 25,000 years to reach us. How far do you think it is? 25,000 light years? That's what you might expect. But what if I told you that the galaxy is actually 32 billion light years away? Confused? Let's dive into the fascinating world of cosmic expansion.