A Journey Through the Expanding Universe
Our universe is a vast and mysterious place, constantly expanding in all directions. This expansion was first observed by the astronomer Edwin Hubble, and it continues to intrigue scientists and stargazers alike.
But what does it mean when we say the universe is "expanding"? Imagine a cosmic balloon being gradually inflated—the galaxies are the dots on the surface, moving away from each other as the balloon expands.
The Hubble's Law explains how galaxies are retreating from each other at a speed proportional to their distance. This groundbreaking discovery has played a pivotal role in our understanding of cosmology.