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29 Σεπ 2020 · The observable Universe is 93 billion light-years, yet, our galaxy, the Milky Way, is just 100,000 light-years in diameter. It would take us endless generations just to explore our galaxy, let alone the Universe.
When we look in any direction, the furthest visible regions of the Universe are estimated to be around 46 billion light years away. That's a diameter of 540 sextillion (or 54 followed by...
28 Ιαν 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.
12 Ιουν 2024 · Astronomers widely accept that the universe formed in the Big Bang approximately 13.8 billion years ago. It has been expanding ever since. This expansion explains how a...
23 Οκτ 2024 · The observable universe is approximately 93 billion light-years in diameter. This number is derived from several considerations. A light-year, the distance light can travel in one Earth year, is 9.46 trillion kilometres (5.88 trillion miles).
According to Bayesian mathematical models (designed to help us extrapolate ideas by looking at prior evidence that led us to our current knowledge), the whole universe is likely at least 470 billion light years across, and possibly much more, or even infinite.
1 Ιουλ 2019 · Using today’s most powerful telescopes, astronomers see galaxies located over 13 billion light-years from Earth. (A light-year equals about 6 trillion miles, or 10 trillion kilometers.)
