MPJ

It's hard to create a list of all the scientists in the history of mathematics and physics who better applied theoretical knowledge into the hardware that ultimately worked and moved the world to the next step of existence. But if we try to do it, John von Neumann would be among the top five in the list of scientific GOATs. Probably the best of all of his contributions is in the history of computer science - along with Arthur Burks and Herman Goldstine, he published a paper* in 1946 that practically described the architecture of a modern computers as we are familiar with today. However, what he will be most remembered for is not a machine in existence today but one that is still just a theoretical and basically only an idea. Not yet anyways. In short, design of a von Neumann probe or a self-replicating spacecraft is not that far-fetched from all what we know today and if humanity sees its survival on Earth difficult in the future (to say the least) and tries to became interste...

Something was bothering her for days. She didn't actually know what it was. It was not the food. She knew that well and her belly was not itching her. Not a single bit. Mom was giving her delicious portions every day and she was feeling healthier and stronger every morning. It was not the air or water either. The forest and all three plains outside were.. Like the usual.. Beautiful and green with lots of life emerging from the trees and rocks. Even the ocean was calm and perfect the other day when she foolishly followed her older brother and his two peers to the cliff. They mocked her all the way down the stream and even took all her snacks she had and found on the way. No. What she started to experience just the other day after the trip to the cliffs was some sort of discomfort she never experienced before. Nobody could harm her in the forest. It was not that. Not even on the plains. She was always following her mother and brother during all their travels and never got into an...

Do you know how big is our Solar system? I can't be sure of course, but there's a strong possibility that common knowledge about our planetary neighborhood ends with enumerating most of the planets, one dwarf planet and couple of named moons, asteroids and comets. Amazingly, the truth is far, far beyond that and believe it or not, if we include Oort cloud, the Solar system, with us representing its only living residents, is approximately 3 light years in diameter. This is, more or less, equal to 3e+13 kilometers or 30.000.000.000.000 km. The distance about 100 million times bigger than the distance to the Moon. It is tremendously huge and just about one and a half light years shorter than the distance from our Sun to the nearest star! The layout of the solar system*