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Observable universe

en.wikipedia.org/wiki/Observable_universe

... much information on the content and character of the universe's structure. The organization of structure appears to follow ...

How big is the universe? - Phys.org

phys.org/news/2015-10-big-universe.html

Oct 5, 2015 ... Our brains struggle to comprehend how big the universe is because everything here on Earth, and even the Earth itself, is very small when ...

How Big is the Universe? - Space.com

www.space.com/24073-how-big-is-the-universe.html

Dec 24, 2013 ... Based on what we can observe, the universe appears to be almost 28 billion light -years in diameter. However, it is far larger than that.

www.ask.com/youtube?q=How Large Is the Universe?&v=AC7yFDb1zOA
Feb 12, 2013 ... 'You'll never get your head around how big the universe is,' warns ... And supposing our galaxy were the size of a grain of sand, how big would ...
www.ask.com/youtube?q=How Large Is the Universe?&v=yaX4iGw-b_Y
Sep 18, 2012 ... The universe has long captivated us with its immense scales of distance and time . How far does it stretch? Where does it end, and what lies ...

Why is the Scale of the Universe so Freakishly Large? - io9 - Gizmodo

io9.gizmodo.com/why-is-the-scale-of-the-universe-so-freakishly-large-1719048488

Jul 20, 2015 ... “You just won't believe how vastly, hugely, mind-boggingly big it is.” But why must this be so? And why does our Universe exhibit such ...

How can it be understood that the universe is 93 billion light years ...

www.quora.com/How-can-it-be-understood-that-the-universe-is-93-billion-light-years-across-and-yet-only-13-8-billion-years-old-1

At 379,000 years after the big bang, there was a bump (overdensity) in the region of space where our super-cluster (the Virgo cluster), and our galaxy (the Milky ...

how big is our universe?

www.cfa.harvard.edu/seuforum/howfar/howfar.html

On a beautiful, clear night, the stars seem so close you could almost reach out and touch them. How far away are the stars? What lies beyond them? How large  ...

Experience Just How Big the Universe is, in One Mind-Blowing - Mic

mic.com/articles/81873/experience-just-how-big-the-universe-is-in-one-mind-blowing-interactive

Feb 11, 2014 ... This is the smallest unit of scale in the universe. How can you have a "smallest length"? In the same way that the speed of light has a physical ...

How large is the observable universe? - The Nature of Reality - PBS

www.pbs.org/wgbh/nova/blogs/physics/2012/10/how-large-is-the-observable-universe/

Oct 10, 2012 ... From the time of the Big Bang to the era of recombination (when neutral hydrogen atoms formed) some 380,000 years later, the universe was ...

Answer
The actual size of the entire universe is unknown.
The estimated the size of the observable universe--the part of the universe that can be seen—can theoretically be measured, however. Estimates vary based on different models of the universe’s expansion.
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How to Picture the Size of the Universe | WIRED

www.wired.com

Dec 6, 2011 ... No one knows exactly how large the universe is. It could be infinite or it could have an edge, meaning that traveling for long enough in one ...

NASA - How Big is Our Universe?

www.nasa.gov

Jul 15, 2004 ... 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 ...

How Big is the Universe? - Universe Today

www.universetoday.com

Aug 11, 2014 ... The Universe is big, but how big is it? That all depends on whether the Universe is finite or infinite. Even the word "big" is tough to get clear.