Can We Truly Define the Largest and Smallest Structures in the Universe?

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In summary, there is no definitive answer to whether or not we will ever be able to find the smallest or largest structures of the universe. It depends on how we define "structures" and the limitations of our current understanding of physics and mathematics. The concept of infinitesimals and the number line never ending may make it difficult to determine the smallest or largest structures, but it is not impossible. Additionally, the subjective nature of what is considered large or small adds to the complexity of this question. Ultimately, the universe itself may be the largest structure, but this is open to interpretation.
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Will we ever be able to find the smallest or the largest structures of the universe or is that not possible in the way infinitesimals and the number line never end.
 
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Pjpic said:
Will we ever be able to find the smallest or the largest structures of the universe or is that not possible in the way infinitesimals and the number line never end.

Depends what you consider a 'structure'... gas clouds can be super massive for example.

As for clumped matter, you can't put too much matter in one place without it collapsing into a black hole under it's own gravity. And the smallest structures are those of atoms, or possibly the elementary particles themselves depending on how far you want to take it.

Of course it's hard to know you found the 'largest' or 'smallest' of something, because you never know if your going to find something smaller/larger.
 
  • #3
Pjpic said:
Will we ever be able to find the smallest or the largest structures of the universe or is that not possible in the way infinitesimals and the number line never end.
It is important to understand that physics and mathematics are two completely different subjects. The concepts of infinitesimals and infinity in mathematics says nothing about the physical world. In math the concept of continuum is well defined, but whether or not space or time can be viewed strictly by a continuum model is an open question.
 
  • #4
I submit that the universe itself is the largest structure, but I don't know if that fits your definition.
 
  • #5
What is large and what is consider small? If you zoom all the way out nothing is large and everything is small. Thats kinda like determining what is right and what is wrong. :), but who knows, we claim that we did find suns so large that our sun is the size of an Earth to that sun. lol
 

FAQ: Can We Truly Define the Largest and Smallest Structures in the Universe?

What is the largest structure in the universe?

The largest known structure in the universe is the Hercules-Corona Borealis Great Wall, a galaxy supercluster that is estimated to be about 10 billion light years in length.

What is the smallest structure in the universe?

The smallest known structure in the universe is the Planck length, which is approximately 1.6 x 10^-35 meters. It is the smallest length that has any physical meaning.

How do scientists determine the size of these structures?

Scientists use a variety of methods, such as telescopes, satellites, and computer simulations, to measure the size of different structures in the universe. They also use mathematical models and theories to estimate the size of structures that cannot be directly observed.

Are there any structures smaller than the Planck length?

According to current theories, the Planck length is considered the smallest possible length, as anything smaller would not have any physical meaning. However, some scientists believe that there may be subatomic particles that exist at smaller scales.

Why is it important for scientists to study the largest and smallest structures in the universe?

Studying the largest and smallest structures in the universe allows scientists to better understand the fundamental laws of physics and the origins and evolution of the universe. It also helps us gain insight into the behavior of matter and energy at extreme scales, which can have practical applications in fields such as technology and medicine.

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