Size of the universe - Revision history

Jmdonev at 16:17, 23 August 2022

2022-08-23T16:17:52Z

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	<onlyinclude>The '''size of the universe''' is how ~~bit~~ the universe is and entities contained within it.</onlyinclude> The universe is vast; it has been expanding for almost [[time scale of the universe\|13.8 billion years]] at a considerable fraction of the [[speed of light]],<ref>For some interesting reading please see: http://map.gsfc.nasa.gov/universe/uni_expansion.html</ref> so what we can see is a sphere roughly 28 billion [[light year]]s across. This means that the observable universe is ~10<sup>26</sup> [[meter\|m]] across. For a reference of size, humans are usually under 2 m tall, [[atom]]s are approximately 10<sup>-10</sup> m across, and [[nucleus\|nuclei]] are approximately 10<sup>-15</sup> m across.<ref>Sears and Zemanski's University Physics, 13th edition by Young and Freedman. Addison Wesley, 2010. Chapter 43, pg 1440.</ref> There is a difference of a factor of 10<sup>41</sup> between the universe and a nucleus, which can be written out as 100 000 000 000 000 000 000 000 000 000 000 000 000 000, a number so large it is hard to wrap one's head around. Trying to understand the size of the universe, what we can see and what we can't see is complicated (and beyond the scope of this brief page) please see this article at [https://www.space.com/24073-how-big-is-the-universe.html\| Space.com] for a more detailed view of this fascinating question.		<onlyinclude>The '''size of the universe''' is how big the universe is and entities contained within it.</onlyinclude> The universe is vast; it has been expanding for almost [[time scale of the universe\|13.8 billion years]] at a considerable fraction of the [[speed of light]],<ref>For some interesting reading please see: http://map.gsfc.nasa.gov/universe/uni_expansion.html</ref> so what we can see is a sphere roughly 28 billion [[light year]]s across. This means that the observable universe is ~10<sup>26</sup> [[meter\|m]] across. For a reference of size, humans are usually under 2 m tall, [[atom]]s are approximately 10<sup>-10</sup> m across, and [[nucleus\|nuclei]] are approximately 10<sup>-15</sup> m across.<ref>Sears and Zemanski's University Physics, 13th edition by Young and Freedman. Addison Wesley, 2010. Chapter 43, pg 1440.</ref> There is a difference of a factor of 10<sup>41</sup> between the universe and a nucleus, which can be written out as 100 000 000 000 000 000 000 000 000 000 000 000 000 000, a number so large it is hard to wrap one's head around. Trying to understand the size of the universe, what we can see and what we can't see is complicated (and beyond the scope of this brief page) please see this article at [https://www.space.com/24073-how-big-is-the-universe.html\| Space.com] for a more detailed view of this fascinating question.

	Here are some useful on-line tools that compare the sizes of various objects in the universe:		Here are some useful on-line tools that compare the sizes of various objects in the universe:

Jmdonev: 1 revision imported

2022-08-21T17:45:11Z

1 revision imported

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En>Jmdonev at 17:36, 21 August 2022

2022-08-21T17:36:28Z

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	<onlyinclude>The '''size of the universe''' ~~refers to the relative size of~~ the universe and entities contained within it.</onlyinclude> The universe is vast; it has been expanding for almost [[time scale of the universe\|13.8 billion years]] at a considerable fraction of the [[speed of light]],<ref>For some interesting reading please see: http://map.gsfc.nasa.gov/universe/uni_expansion.html</ref> so it is roughly 13 billion [[light year]]s across. This means that the universe is ~~~1.3 x~~ 10<sup>26</sup> [[meter\|m]] across. For a reference of size, humans are usually under 2 m tall, [[atom]]s are approximately 10<sup>-10</sup> m across, and [[nucleus\|nuclei]] are approximately 10<sup>-15</sup> m across.<ref>Sears and Zemanski's University Physics, 13th edition by Young and Freedman. Addison Wesley, 2010. Chapter 43, pg 1440.</ref> There is a difference of a factor of 10<sup>41</sup> between the universe and a nucleus, which can be written out as 100 000 000 000 000 000 000 000 000 000 000 000 000 000, a number so large it is hard to wrap one's head around.		<onlyinclude>The '''size of the universe''' is how bit the universe is and entities contained within it.</onlyinclude> The universe is vast; it has been expanding for almost [[time scale of the universe\|13.8 billion years]] at a considerable fraction of the [[speed of light]],<ref>For some interesting reading please see: http://map.gsfc.nasa.gov/universe/uni_expansion.html</ref> so what we can see is a sphere roughly 28 billion [[light year]]s across. This means that the observable universe is ~10<sup>26</sup> [[meter\|m]] across. For a reference of size, humans are usually under 2 m tall, [[atom]]s are approximately 10<sup>-10</sup> m across, and [[nucleus\|nuclei]] are approximately 10<sup>-15</sup> m across.<ref>Sears and Zemanski's University Physics, 13th edition by Young and Freedman. Addison Wesley, 2010. Chapter 43, pg 1440.</ref> There is a difference of a factor of 10<sup>41</sup> between the universe and a nucleus, which can be written out as 100 000 000 000 000 000 000 000 000 000 000 000 000 000, a number so large it is hard to wrap one's head around. Trying to understand the size of the universe, what we can see and what we can't see is complicated (and beyond the scope of this brief page) please see this article at [https://www.space.com/24073-how-big-is-the-universe.html\| Space.com] for a more detailed view of this fascinating question.

	Here are some useful on-line tools that compare the sizes of various objects in the universe:		Here are some useful on-line tools that compare the sizes of various objects in the universe:

Jmdonev: 1 revision imported

2021-10-15T19:13:38Z

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energy>Jmdonev at 18:47, 27 May 2021

2021-05-27T18:47:11Z

← Older revision		Revision as of 18:47, 27 May 2021
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	~~[[Category: Ashley edit~~]]
	<onlyinclude>The '''size of the universe''' refers to the relative size of the universe and entities contained within it.</onlyinclude> The universe is vast; it has been expanding for almost [[time scale of the universe\|13.8 billion years]] at a considerable fraction of the [[speed of light]],<ref>For some interesting reading please see: http://map.gsfc.nasa.gov/universe/uni_expansion.html</ref> so it is roughly 13 billion [[light year]]s across. This means that the universe is ~1.3 x 10<sup>26</sup> [[meter\|m]] across. For a reference of size, humans are usually under 2 m tall, [[atom]]s are approximately 10<sup>-10</sup> m across, and [[nucleus\|nuclei]] are approximately 10<sup>-15</sup> m across.<ref>Sears and Zemanski's University Physics, 13th edition by Young and Freedman. Addison Wesley, 2010. Chapter 43, pg 1440.</ref> There is a difference of a factor of 10<sup>41</sup> between the universe and a nucleus, which can be written out as 100 000 000 000 000 000 000 000 000 000 000 000 000 000, a number so large it is hard to wrap one's head around.		<onlyinclude>The '''size of the universe''' refers to the relative size of the universe and entities contained within it.</onlyinclude> The universe is vast; it has been expanding for almost [[time scale of the universe\|13.8 billion years]] at a considerable fraction of the [[speed of light]],<ref>For some interesting reading please see: http://map.gsfc.nasa.gov/universe/uni_expansion.html</ref> so it is roughly 13 billion [[light year]]s across. This means that the universe is ~1.3 x 10<sup>26</sup> [[meter\|m]] across. For a reference of size, humans are usually under 2 m tall, [[atom]]s are approximately 10<sup>-10</sup> m across, and [[nucleus\|nuclei]] are approximately 10<sup>-15</sup> m across.<ref>Sears and Zemanski's University Physics, 13th edition by Young and Freedman. Addison Wesley, 2010. Chapter 43, pg 1440.</ref> There is a difference of a factor of 10<sup>41</sup> between the universe and a nucleus, which can be written out as 100 000 000 000 000 000 000 000 000 000 000 000 000 000, a number so large it is hard to wrap one's head around.

Jmdonev: 1 revision imported

2019-01-04T18:15:20Z

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2dev>Ashley.Sheardown at 19:05, 19 December 2018

2018-12-19T19:05:12Z

← Older revision		Revision as of 19:05, 19 December 2018
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	<onlyinclude>The '''size of the universe''' refers to the relative size of the universe and entities contained within it.</onlyinclude> The universe is vast; it has been expanding for almost [[~~timescale~~ of the universe\|13.8 billion years]] at a considerable fraction of the [[speed of light]],<ref>For some interesting reading please see: http://map.gsfc.nasa.gov/universe/uni_expansion.html</ref> so it is roughly 13 billion [[light year]]s across. This means that the universe is ~1.3 x 10<sup>26</sup> [[meter\|m]] across. For a reference of size, humans are usually under 2 m tall, [[atom]]s are approximately 10<sup>-10</sup> m across, and [[nucleus\|nuclei]] are approximately 10<sup>-15</sup> m across.<ref>Sears and Zemanski's University Physics, 13th edition by Young and Freedman. Addison Wesley, 2010. Chapter 43, pg 1440.</ref> There is a difference of a factor of 10<sup>41</sup> between the universe and a nucleus, which can be written out as 100 000 000 000 000 000 000 000 000 000 000 000 000 000, a number so large it is hard to wrap one's head around.		[[Category: Ashley edit]]
			<onlyinclude>The '''size of the universe''' refers to the relative size of the universe and entities contained within it.</onlyinclude> The universe is vast; it has been expanding for almost [[time scale of the universe\|13.8 billion years]] at a considerable fraction of the [[speed of light]],<ref>For some interesting reading please see: http://map.gsfc.nasa.gov/universe/uni_expansion.html</ref> so it is roughly 13 billion [[light year]]s across. This means that the universe is ~1.3 x 10<sup>26</sup> [[meter\|m]] across. For a reference of size, humans are usually under 2 m tall, [[atom]]s are approximately 10<sup>-10</sup> m across, and [[nucleus\|nuclei]] are approximately 10<sup>-15</sup> m across.<ref>Sears and Zemanski's University Physics, 13th edition by Young and Freedman. Addison Wesley, 2010. Chapter 43, pg 1440.</ref> There is a difference of a factor of 10<sup>41</sup> between the universe and a nucleus, which can be written out as 100 000 000 000 000 000 000 000 000 000 000 000 000 000, a number so large it is hard to wrap one's head around.

	Here are some useful on-line tools that compare the sizes of various objects in the universe:		Here are some useful on-line tools that compare the sizes of various objects in the universe:

Jmdonev: 1 revision imported

2018-06-25T14:30:30Z

1 revision imported

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Jmdonev at 17:14, 13 June 2018

2018-06-13T17:14:32Z

← Older revision		Revision as of 17:14, 13 June 2018
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	<onlyinclude>The '''size of the universe''' refers to the relative size of the universe and entities contained within it.</onlyinclude> The universe is vast; it's been expanding for almost [[timescale of the universe\|13.8 billion years]], at a considerable fraction of the [[speed of light]],<ref>For some interesting reading please see: http://map.gsfc.nasa.gov/universe/uni_expansion.html</ref> so it's roughly 13 billion [[light year]]s across. This means that the universe is ~1.3 x 10<sup>26</sup> [[meter\|m]] across. ~~People~~ are usually ~~not quite~~ 2 m tall, [[atom]]s are ~~about~~ 10<sup>-10</sup> m across, [[nucleus\|nuclei]] are ~~about~~ 10<sup>-15</sup> m across. ~~While mathematics says there~~'s a difference of a factor 10<sup>41</sup>, ~~and that could~~ be written out: 100 000 000 000 000 000 000 000 000 000 000 000 000 ~~000x~~, it's hard to wrap one's ~~mind~~ around ~~numbers like this~~.		<onlyinclude>The '''size of the universe''' refers to the relative size of the universe and entities contained within it.</onlyinclude> The universe is vast; it has been expanding for almost [[timescale of the universe\|13.8 billion years]] at a considerable fraction of the [[speed of light]],<ref>For some interesting reading please see: http://map.gsfc.nasa.gov/universe/uni_expansion.html</ref> so it is roughly 13 billion [[light year]]s across. This means that the universe is ~1.3 x 10<sup>26</sup> [[meter\|m]] across. For a reference of size, humans are usually under 2 m tall, [[atom]]s are approximately 10<sup>-10</sup> m across, and [[nucleus\|nuclei]] are approximately 10<sup>-15</sup> m across.<ref>Sears and Zemanski's University Physics, 13th edition by Young and Freedman. Addison Wesley, 2010. Chapter 43, pg 1440.</ref> There is a difference of a factor of 10<sup>41</sup> between the universe and a nucleus, which can be written out as 100 000 000 000 000 000 000 000 000 000 000 000 000 000, a number so large it is hard to wrap one's head around.

	~~There~~ are some ~~very good~~ on-line tools ~~to help~~ compare the sizes of various objects in the universe:		Here are some useful on-line tools that compare the sizes of various objects in the universe:
	*The King Centre for visualization in science<ref> http://www.kcvs.ca/site/projects/astronomy.html</ref>, specifically their [http://www.kcvs.ca/site/projects/astronomy_files/power10/powers10.swf scale of the cosmos]		*The King Centre for visualization in science<ref> http://www.kcvs.ca/site/projects/astronomy.html</ref>, specifically their [http://www.kcvs.ca/site/projects/astronomy_files/power10/powers10.swf scale of the cosmos]
	*The htwins [http://htwins.net/scale2/ project] (click on the start button and then click on the notes to mute the music)		*The htwins [http://htwins.net/scale2/ project] (click on the start button and then click on the notes to mute the music)
	*Hyperphysics has a nice analogy [http://hyperphysics.phy-astr.gsu.edu/hbase/nuclear/nucuni.html#c2 here] that helps scale the size of the universe.		*Hyperphysics has a nice analogy [http://hyperphysics.phy-astr.gsu.edu/hbase/nuclear/nucuni.html#c2 here] that helps scale the size of the universe.

	Here's a video from IMAX cosmic voyage (music from "The Matrix" movie-trilogy and "Awake" by Jake Kaufman):
			Here is a video from IMAX cosmic voyage which demonstrates size comparisons between various entities (music from "The Matrix" movie-trilogy and "Awake" by Jake Kaufman):
	<html>		<html>
	<iframe width="809" height="400" src="//www.youtube.com/embed/bhofN1xX6u0" frameborder="0" allowfullscreen></iframe>		<iframe width="809" height="400" src="//www.youtube.com/embed/bhofN1xX6u0" frameborder="0" allowfullscreen></iframe>
	</html>		</html>

	Please [http://energyeducation.ca/encyclopedia/Special:Contact contact us] with other tools showing the size of the universe in ~~cool and~~ interesting ways.		Please [http://energyeducation.ca/encyclopedia/Special:Contact contact us] with other tools showing the size of the universe in interesting ways.

			==For Further Reading==
			*[[Fundamental force]]
			*[[Big Bang]]
			*[[Atom]]
			*[[Nucleus]]
			*Or explore a [[Special:Random\|random page]]

	==References==		==References==
	{{reflist}}		{{reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]

J.williams: 1 revision imported

2015-08-26T21:31:39Z

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