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Learn about the size, expansion, and possible end of the Universe, as well as the difference between the observable and the whole Universe. Find out why the Universe seems infinite and how our perception affects our understanding of it.
28 de ene. de 2022 · How big is the universe? Based on what we can observe, the universe appears to be almost 28 billion light-years across. However, it is far larger than that.
16 de may. de 2023 · Explore the vast expanse of the universe with this website that shows how generations of explorers have taken us farther and farther. Learn about the history, science, and discoveries of the cosmos.
Today the universe has expanded into an age and size that is physically only in parts observable as the observable universe, which is approximately 93 billion light-years in diameter at the present day, while the spatial size, if any, of the entire universe is unknown.
That's a diameter of 540 sextillion (or 54 followed by 22 zeros) miles. But this is really just our best guess – nobody knows exactly how big the Universe really is. That is because we can only...
3 de dic. de 2015 · 4.98K subscribers. Subscribed. 93. 15K views 8 years ago. The universe is a big, big place. But how big? And how do we know? Throughout history, humans have used a variety of techniques and...
26 de sept. de 2023 · The universe is at least 93 billion light-years in diameter, and possibly infinite. Learn how astronomers measure cosmic distances and why we can't travel to nearby stars or galaxies.
