We Only See The Past

The video explains how sound and light travel at different speeds, causing delays in perception. It uses examples like a hammer hitting a pole and lightning to illustrate sound travel. The moon's distance is discussed, showing how light takes time to reach Earth, making us see the moon as it was 1.3 seconds ago. The video also covers galaxies seen by the James Webb Space Telescope, which are billions of light years away, meaning we see them as they were billions of years ago. Finally, it highlights that everything we see is in the past, even objects close to us, due to the time light takes to travel.

What new insight or understanding did you gain from this video?