Observable Universe

The observable universe refers to the portion of the entire universe that we can see and measure from Earth, extending about 93 billion light-years in diameter. This limits our view to regions where light has had enough time to reach us since the universe began with the Big Bang approximately 13.8 billion years ago. Although the universe is much larger, we can't observe everything beyond this distance due to the finite speed of light and the expansion of space. What we see includes billions of galaxies, stars, and other cosmic structures, all contributing to our understanding of the universe's vastness.