Universe size comparison

The size of the observable universe is vast and difficult to comprehend. As of my last knowledge update in September 2021, the observable universe is estimated to be about 93 billion light-years in diameter. This means that light from the farthest objects we can observe has taken approximately 13.8 billion years to reach us since the Big Bang.

It's important to note that the observable universe is not necessarily the entire universe. It's the part of the universe from which light has had enough time to reach us since the universe began. The true size and nature of the entire universe are still topics of ongoing scientific research and exploration.

Keep in mind that these numbers are based on our current understanding of cosmology, and future discoveries may refine our knowledge of the universe's size and structure.