What is the smallest thing in the universe and its size?

Answer 1

That's a very good question. Unfortunately, modern science can't provide an answer. It was once thought that a grain of sand was the smallest object. But then the idea of the atom came along, and of course, then atoms were thought smallest. But then we discovered that atoms have components, and thought that those components must be smallest. And then we discovered that protons and neutrons are composed of quarks. By now, we have learned not to assume we've found the smallest constituent of matter, since we are usually wrong. Among candidates for smallest objects are singularities (minuscule points in space, such as at the core of a black hole), neutrinos, and the 'knots' of theoretical cosmic 'strings.' It's hard to say what the smallest object is.

Answer 2

It's commonly thought that the perpetual motion particle or the quark are the smallest things to have been discovered, thus far, within our Universe.

This begs a question, a question that one very probing mind (to be found on ESB under the name 'glenwils') wants an answer to:- What on God's green earth are these tiny things made up of? I mean, they're smaller than your little toenail. So small, in fact, that you need a magnifying glass and a room illuminated by at least a 60 watt light bulb to be able to see the little beggars.

Here at Sheppey Science University, we think we've found the answer. After numerous experiments involving petri dishes, Bunsen burners, test tubes, and most importantly, tweezers; we have broken both the quark and the perpetual motion particle down into their most basic building blocks, and the result won't come as a surprise to any of you with background knowledge in the field of micro-science. Each of the particles is made up of over eleventy ten sands, making the sand the world's most littleist thing, by miles.

Answer 3

Eventually there is Planck Space at 4.222 x 10-101 m

Also there is Quantoam foam just smaller than strings and Planck Length/Planck Particle. The Quantoam Foam is0.00000000001 yoctometers

Strings 1D: 0.000000000016 yoctometers

Planck Length: Same as Strings 1D

Yoctometer is 1,000,000,000,000,000,000,000,000th of a meter. This number is widely known as a septillionth or 10-24 of a meter

and the yoctometer is the smallest known measurement right now but technology will get better and they will finds smaller measurements and smaller things

Answer 4

Quarks are believed to be the smallest known particles in the universe. They are elementary particles that make up protons and neutrons in an atom. Quarks are thought to have no dimension or size.