Universe and how big is it.
Can anyone put in perspective how big our universe is ?
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Feel free to reply to any comment by clicking the "Reply" button.The fascination for me is we reach outward to the stars and don't see an end. Then we look through the microscope deep into the nature of matter and don't see an end. Are there two ends of a piece of superstring to be found? Probably so weird and so simple at the ends...if indeed there are ends 
Geoffrey51
Level 8
June 13, 2018
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birdingnut
Level 8
June 12, 2018
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Thank you for the information Birdingnut, regards Mike.
Knowing my size... why will I fucking care of the size?
GipsyOfNewSpain
Level 9
June 12, 2018
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Likely not, however I can tell you about a different story while we are at it. Around 1905, give or take a little bit more than 100 years, the common consensus was that the milky way was IT. Bearly 100 years ago, humanity knowledge of the universe was just our own galaxy !!! We have come a long way to learn and understand it is way bigger than that. Now here it comes the best part, Edwin Hubble basicslly "discovered" the universe (inside joke for astronomers) by observing galaxies flying away (expansion) then the telescope named after him gave us the famous photo that proved the thermal temp predicted by the big bang model and now the next big thing coming is the Webb telescope that will move the ball one step closer into answering your question. Stay tuned, good things coming up soon !!!!
IamNobody
Level 8
June 12, 2018
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So if galaxies are flying away from each other, why is it that the Andromeda galaxy is at some time in the future expected to collide with the Milky Way ?
@Axlefoley ahhhh very good question .... Don't shot the messanger is the first thing that comes to mind. Now, lets try to break this down in small pieces. The flying away argument (expansion) is determined by the light we receive from them. Its one color if they are moving away and another color if they are moving closer (blue and red, don't remember which one is which). It has something to do with frequency compression or expansion therefore the color change and this applies to the distant galaxies. Andromeda is within "walking" distance in comparison. Now, the next thing to keep in mind, everything rotates. As the earth goes around the sun and at times is closer, other times farther, by the same token, I would say we are in a collision course with Andromeda because of rotational patterns and being close enough at the same time. Hats off to you, excellent question that truly deserves more research.
At least 14.8 billiion light years and counting
magicwatch
Level 7
June 12, 2018
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