How old is 3% of the age of the universe?

[misi]

Hmmm. Does that indicate our universe was created by a big boom/big supernova in a larger universe? Where are we now in relation to the larger universe? Is our universe merely a portion of an even larger universe?

No, there isn't a larger Universe.
We know only a part of the Universe and mistakenly we call that tiny part THE UNIVERSE.

 

[foxidrive]

The only problem there is "The Universe" means everything. There are no boundaries to it.
People do refer to "the Known Universe", which is the observable universe by telescope observations.

I was trying to follow Chris' hypothesis of a larger Universe. There's so much about space and dark matter and black holes and event horizons which are theories. Not observable. They may match the data, but then so could some other theory in the future.

 

[misi]

There's so much about space and dark matter and black holes and event horizons which are theories. Not observable. They may match the data, but then so could some other theory in the future.

Lots of theories, and all claimed to be correct.
Universe, Cosmos, World...
Would you like to be confused more? Read this: https://en.wikipedia.org/wiki/Universe

The proper distance—the distance as would be measured at a specific time, including the present—between Earth and the edge of the observable universe is 46 billion light-years (14 billion parsecs), making the diameter of the observable universe about 91 billion light-years (28×10^9 pc). The distance the light from the edge of the observable universe has travelled is very close to the age of the Universe times the speed of light, 13.8 billion light-years (4.2×10^9 pc), but this does not represent the distance at any given time because the edge of the Universe and the Earth have moved since further apart.[52] For comparison, the diameter of a typical galaxy is 30,000 light-years, and the typical distance between two neighboring galaxies is 3 million light-years.[53] As an example, the Milky Way is roughly 100,000 light years in diameter,[54] and the nearest sister galaxy to the Milky Way, the Andromeda Galaxy, is located roughly 2.5 million light years away.[55] Because we cannot observe space beyond the edge of the observable universe, it is unknown whether the size of the Universe is finite or infinite.[13][56][57]

91?

The Universe is composed almost completely of dark energy, dark matter, and ordinary matter. Other contents are electromagnetic radiation (estimated to be from 0.005% to close to 0.01%) and antimatter.[66][67][68] The total amount of electromagnetic radiation generated within the universe has decreased by 1/2 in the past 2 billion years.[69][70]

Stated as facts.

 

[aye-aye-Chris]

Hmmm. Does that indicate our universe was created by a big boom/big supernova in a larger universe? Where are we now in relation to the larger universe? Is our universe merely a portion of an even larger universe?

Persactly. My theory, yes.

Nice editing... my questioning mind wonders about the scale of those two things though. I comment on that because a supernova is the death of a star, and the Milky Way has around 100 to 400 Billion stars inside it.

While considering that....

You wonder about scale?

 

[foxidrive]

You wonder about scale?

All those stars in the vid. 100 to 400 billion of them fit inside the Milky Way. That's the scale I was thinking about.

Is our universe merely a portion of an even larger universe?
Persactly. My theory, yes.

I'd agree. When dwelling on the term 'universe' - it means everything that can exist, and our 'observable' universe is clearly just the portion our current instruments can observe.

Stated as facts.

Yes. It's funny to read the NASA page below in light of that. Again and again they say "WTF? Who knows?"
Theorists still don't know what the correct explanation is, but they have given the solution a name. It is called dark energy.

it is unknown whether the size of the Universe is finite or infinite.

At the NASA page above it's mentioned that the Hubble Space Telescope found that the expansion of the Universe is accelerating.

It may be able to keep fitting my expanding body inside it after all.

Lots of theories, and all claimed to be correct.

 

[misi]

At the NASA page above it's mentioned that the Hubble Space Telescope found that the expansion of the Universe is accelerating.

Maybe:
The expansion of the Universe observable by our devices is accelerating.

 

[aye-aye-Chris]

That's us in the Milky Way. Do you see our sun in the blown out bit to the bottom left?

This bloke, ~1000 times* the size of our sun, if it was in a galaxy like ours, in proportional size, the stars in it would be... HUGE. Try to imagine a supernova from one.
Nice pics here --> http://pics-about-space.com/

 

[misi]

That's us in the Milky Way. Do you see our sun in the blown out bit to the bottom left?

Little bugger...

 

[foxidrive]

if it was in a galaxy like ours, in proportional size, the stars in it would be... HUGE. Try to imagine a supernova from one.

Ahh, I think I get cha. If there was a galaxy 1000 times larger than El Milky Way ... but is that possible? We're 100,000 light years wide, and I was reading a few days ago that the average is 30,000 light years.

I can imagine an extra-dimensional brane as M theory predicts, and which could have totally different laws of physics. Maybe something like that is normal inside one of them. They actually hypothesize that one of these things can interact with our Universe and annihilate us at any time. I won't let that stop me planning dessert later on.

 

[misi]

They actually hypothesize that one of these things can interact with our Universe and annihilate us at any time. I won't let that stop me planning dessert later on.

No dessert only desert.
An image does not need dessert.
(There is a popular belief errr...theory that we are only an image of something from somewhere else)

 

[foxidrive]

we are only an image of something from somewhere else

Is that the 'made in his image' thing?

 

[misi]

Is that the 'made in his image' thing?

No.
The theory is that we don't exist where we think we are.
We are only images...

 

[foxidrive]

I'm not familiar with that theory - is it Buddism?
It occurs to me that The Matrix was based upon that idea.

 

[misi]

I'm not familiar with that theory - is it Buddism?

It wasn't a religious belief.
Simply we cannot exist, so we are only some kind of images from another World.

 

[foxidrive]

Simply we cannot exist, so we are only some kind of images from another World.

Hmm. I can't quite follow that misi. I exist here. I can hit a key on my keyboard and it types q.

 

[misi]

Hmm. I can't quite follow that misi. I exist here. I can hit a key on my keyboard and it types q.

I believe and agree with you.
I hope that I exist as well.

 

[foxidrive]

I hope that I exist as well.

I can see you typing - unless that is a bot you have programmed to type for you in the forum!

 

[misi]

A bot?
It's an image.

 

[aye-aye-Chris]

I can imagine an extra-dimensional brane as M theory predicts, and which could have totally different laws of physics...

Why complicate things with theories that can only be speculated. For example, read the following, there will be questions. (not)

Branes are also frequently studied from a purely mathematical point of view since they are related to subjects such as homological mirror symmetry and noncommutative geometry. Mathematically, branes may be represented as objects of certain categories, such as the derived category of coherent sheaves on a Calabi–Yau manifold, or the Fukaya category.

We are in one universe*, one humungously unmeasurable universe*

Distance is unmeasurable, Light Year is a human term for how far visible light can travel in a vacuum** in a human defined year***. Light Year is a distance, not a time. 299792458 metres per second (For a simplified description --> lightspeed evidence ) Also this image below from almost 100 years ago.

What is a meter you might ask. Well, at this point in time it is the distance light will travel in 1/299,792,458 of a second 3.33x10-9

In 1958 Froome obtained a value of 299,792.5 km/s using a microwave interferometer and a Kerr cell shutter. After 1970 the development of lasers with very high spectral stability and accurate caesium clocks made even better measurements possible. Up until then, the changing definition of the metre had always stayed ahead of the accuracy in measurements of the speed of light. But by 1970 the point had been reached where the speed of light was known to within an error of plus or minus 1 m/s. It became more practical to fix the value of c in the definition of the metre and use atomic clocks and lasers to measure accurate distances instead. Nowadays, the speed of light in vacuum is defined to have an exact fixed value when given in standard units. Since 1983 the metre has been defined by international agreement as the distance travelled by light in vacuum during a time interval of 1/299,792,458 of a second. This makes the speed of light exactly 299,792.458 km/s. (Also, because the inch is now defined as 2.54 centimetres, the speed of light also has an exact value in imperial units.) This definition only makes sense because the speed of light in vacuum is measured to have the same value by all observers; a fact which is subject to experimental verification

What is light, you might well ask. Well... The SI definition makes certain assumptions about the laws of physics. For example, it assumes that the particle of light, the photon, is massless. If the photon had a small rest mass, the SI definition of the metre would become meaningless because the speed of light would change as a function of its wavelength

After all that, from the VY Canis Majoris sun right down to an atom, measurements are assumed from the S.I. units as they are now. But wait, an atom has smaller bits, An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are very small; typical sizes are around 100 pm (a ten-billionth of a meter, in the short scale). However, atoms do not have well-defined boundaries, and there are different ways to define their size that give
different but close values.

Identifying all the subatomic particles that are thought to make up an atom (Wow, such confidence ) the atom can be broken down into three constituents parts – protons, neutron, and electrons

So then we ask: What’s the smallest thing in the universe?
That's a complicated question. After all, fundamental particles are what physicists call the most basic building blocks of matter, and they are so minute that no current technology--nor any technology we can even envision--can pinpoint their size.

So now I ask. What is the largest thing in the Universe? And don't you dare Riddle Scale me.

* The Universe is all of time and space and its contents. The Universe includes planets, stars, galaxies, the contents of intergalactic space, the smallest subatomic particles, and all matter and energy.
** A light-year, abbreviation: ly) is a unit of length used informally to express astronomical distances. It is well over 9 trillion kilometres (or about 6 trillion miles). As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year. Because it includes the word year, the term light-year is sometimes misinterpreted as a unit of time. The light-year is most often used when expressing distances to stars and other distances on a galactic scale, especially in non-specialist and popular science publications. The unit usually used in professional astrometry is the parsec (symbol: pc, approximately 3.26 light-years; the distance at which one astronomical unit subtends an angle of one second of arc).
*** In astronomy, a Julian year (symbol: a) is a unit of measurement of time defined as exactly 365.25 days of 86400 SI seconds each. The Julian year is the average length of the year in the Julian calendar used in Western societies.

 

[misi]

So now I ask. What is the largest thing in the Universe?
* The Universe is all of time and space and its contents. The Universe includes planets, stars, galaxies, the contents of intergalactic space, the smallest subatomic particles, and all matter and energy.

Excellent !
So the largest thing in the Universe is the Universe.
The only thing to edit in it: The Universe is all of time and space and its contents.