Linked Questions

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218 views

Does Red shift affect electron waves? [duplicate]

According to the De-Broglie Wave Hypothesis an electron can be considered to be a wave. Red Shift occurs due to the expansion of space(Cosmological red shift), which must expand even on the scale of ...
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2answers
214 views

Don't rulers expand at the same rate as the universe they measure? [duplicate]

If you placed a giant ruler between the sun and our nearest star for example, wouldn't the divisions on the ruler expand at the same rate as the universe - therefore maintaining a constant distance? ...
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2answers
77 views

We stretch as the universe does [duplicate]

Here's an idea I thought about; more of a thought experiment than anything: The universe is essentially the same as the universe 14 billion years ago, just stretched. However, all matter stretches ...
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1answer
180 views

Effect of Cosmological Expansion at the Atomic Level [duplicate]

Possible Duplicate: Why does space expansion not expand matter? Does cosmological expansion have any effects at the atomic level?
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2answers
163 views

Expansion of spacetime and matter [duplicate]

When space expands, light is said to be stretched or red-shifted. In fact, Penzias and Wilson discovered this in 1965 and were awarded the Nobel prize in Physics for this discovery. Now, what I am ...
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2answers
68 views

Is the “expansion of space” limited to intersteller space only? [duplicate]

Does the expansion of space (that started from BigBang) limited to expansion of intersteller space only (as observed by Hubble) or does it happen even in the local observable universe? Specifically, ...
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1answer
100 views

does space-time expansion affect on fundamental particle? [duplicate]

does space-time expansion affect on fundamental particle or point particle?
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1answer
67 views

As space expands does the density of matter remain same or increase? [duplicate]

I learned that space is always expanding. Even between sun and earth, it's just gravity is stronger. Imagine space as graph paper and there is a square object that fills it. Space expands, 1x1 cell ...
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2answers
100 views

If the universe is constantly expanding, shouldn't we go away from other planets? [duplicate]

I also saw that every point in the universe is the center. So what does it mean that the universe is expanding? It depends on the repository?
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1answer
65 views

Why redshift of light occurs between galaxies only? [duplicate]

Edwin Hubble discovery of redshift of distant galaxies make me wonder why is this phenomenon only occurs when object is further away, is it possible that redshift happens in short distance too such as ...
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1answer
60 views

What is meant by “space is expanding”? [duplicate]

Is it just the distance between galaxies that increases? Or is the distance increasing between the molecules in my body? Does expansion affect universal constants? Various sources I have heard on the ...
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1answer
77 views

According to some theories space is constantly expanding but at what granularity? [duplicate]

One idea from cosmology is that galaxies are all moving away from each other. Naively this could be taken to mean that they are expanding into something. Popularly this could be seen as them moving ...
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0answers
72 views

How is it possible to measure expansion of universe [duplicate]

Possible Duplicate: Why does space expansion not expand matter? If according to Hubble's law space the expanding then shouldn't everything else along with the space expand and we should not be ...
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1answer
55 views

If space expands, why does a liter of water stay a liter? [duplicate]

From observing the universe, we know that space expands. I see what that means on cosmic scales. But what does it mean on smaller scales? If I have a graduated beaker of 2 liter, and 1 liter of ...
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1answer
68 views

Universe expanding - Interstellar space, Intergalactic space or Intersupercluster space? [duplicate]

When we say that the universe is expanding, the space between everything is not. The space between atoms, the space between my house and school, and the space between Earth and Sun remains the same, ...

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