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Preons are hypothetical subatomic particles that are thought to be the building blocks of quarks and leptons. There is currently no experimental evidence to confirm the existence of preons, and they remain a speculative concept in the field of particle physics.

Preons are hypothetical subatomic particles that are postulated to be the building blocks of quarks. They are considered to be elementary particles without any internal structure in current particle physics theories.

In particle physics, preons are "point-like" particles, conceived to be subcomponents of quarks and leptons.

We currently don't know, though they may have began in the big bang (the beginning of the universe) Preons are so small, if they even exist, that we may never know unless we build a supercollider as big as the solar system, I don't know if we could make one THAT big!!!!!!!!

Water molecules are circular. They have seven arms (called preons) that, when chilled, become sticky and elastic. This causes water to freeze together into a solid mass (a process technically called preonization).

When an ice cube, held together by sticky preons, is warmed up by the ambient heat of a room (the reason rooms have this tendancy towards "room temperture" is complicated and involves the second law of thermodynamics) the preons lose their adhesive quality and, being round, begin to roll off each other.

From our perspective they appear to melt, when in reality they are merely collapsing on a molecular level.

Quarks are elementary particles that make up protons and neutrons. They are believed to be made up of smaller particles called preons, but this has not been proven conclusively.

There's no actual evidence that quarks are not fundamental particles, so as far as we know there's nothing inside them, they just are. There are a couple of half-baked theories that quarks are actually made of "strings" or "preons" (on the scale from "crackpot" to "fully validated scientific theory", strings are somewhat more "baked" than preons are), but there's no real experimental evidence for it; we're pretty much still at the level of some guy in ancient Greece saying "yeah, dude, everything is made of atoms." Except in ancient Greek, of course.

One of the smallest things ever measured is thought to be the size of a quark, which is a fundamental particle that makes up protons and neutrons. Quarks are believed to be smaller than 10^-18 meters in diameter, making them incredibly tiny.

Quarks are fundamental particles that are not made up of smaller particles. They are generated during high-energy collisions, such as those that occur in particle accelerators like the Large Hadron Collider. Quarks are always found in groups, bound together by the strong force to form particles known as hadrons like protons and neutrons.

Quarks and gluons are considered fundamental particles, meaning they are not made up of smaller components. They are the building blocks of protons, neutrons, and other hadrons, with quarks making up the protons and neutrons, while gluons are the force carriers that bind quarks together through the strong nuclear force.

As of now, no particles smaller than quarks have been discovered. Quarks are considered to be fundamental particles, or building blocks of matter, and are not believed to be made up of smaller constituents. However, some hypothetical particles like preons have been proposed in certain theoretical models, but there is no experimental evidence supporting their existence.

If one defines the universe as all the mater and energy that there is, then there would be no way to get "past" it, but even in the hypothetical situation that you were somehow able to be outside the bounds of all matter and energy (aside from yourself and whatever vessel you were in), you would see nothing -- complete blackness, because the matter and energy that make up the universe that you are beyond would include light. Light travels at a finite speed -- incredibly fast, but a finite speed. When an astronomer describes a star 15,000 light years away, that means the light from that star is 15,000 years old or, in other words, it has taken the light from that star 15,000 years to reach you.

The universe, as we know it, was created (according to most theorists) in an event called the big bang about 13.7 billion years ago. Light began to emit at that point, so the visible universe would have a radius of 13.7 billion light-years (or a diameter of 27.4 billion light-years). At the extreme edge of this radius, if one could somehow instantaneously get there, one might see the 'flash' of the big bang explosion that created the universe. Beyond that radius, one would be too far away to see the light from the very birth of the universe and there would only be a complete black void in every direction. No light from stars, not even cosmic radiation, complete nothingness.

If you'd like an idea of how various things compare in size to the universe, you can check out the related link. It's a little misleading in some ways (for one thing, it presents "strings" and "preons" as if they actually existed... the jury is very definitely still out on that), but it's basically correct about relative sizes. Keep in mind that it's a logarithmic scale, not a linear one!