Naked Universe of Ana posts
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How did the first stars formed
Yesterday I was preparing for my Saturday meeting with my ex supervisor and I found the article about first stars numerical Simulation. So I can simply explain what was going on many many years ago.....(200-400 millions years after Big D... Bang) When the Universe first began to evolve, almost everything in it was hydrogen and helium. These were the primordial elements, and there was so much of them that, in the end, the first stars would form from them.But how exactly did stars begin to appear,...
Friedmann Equation (dark matter again, yes)
the continuation of dark matter topic is LaTeX again.....I promise it's easy😌😌https://ru.overleaf.com/read/tbwvwdpgvmdm#de9211
How Do We Know That Dark Matter Makes Up 27%?
Well I divided the post, bc it was toooo big this morning (oh no😮💨, I joked even didn't realize I did it).Next time I will show it with the Friedman equation.Dark matter is not directly observable, but its influence can be measured through various astrophysical observations. The main methods confirming that dark matter constitutes about 27% of the total mass-energy of the universe include:1. Cosmic Microwave Background (CMB)2. Gravitational Lensing3. Dynamics of Galaxies and Cluster...
Dark matter math
I created the overleaf document, bc it's impossible to put formulas hereYou also can see I Know TeX, haha Enjoy!Link
Dark matter world
You've heard of dark matter (no, antimatter is different)?Today I thought about what would happen if you swapped ordinary and dark matter.But to make things simpler, I'll give you some analogies.Imagine the Universe is a house you're building. There are two important materials in this house: ordinary matter (bricks) and dark matter (the frame). Ordinary matter is what we can see: stars, planets, gas. Dark matter is invisible, but it’s abundant and holds the entire structure of the ...
Physics of coitus
1. Classical MechanicsAny movement of bodies follows Newton’s laws. During sex, the following principles apply:Friction - a key factor in the process; without it, nothing happens. It can be considered a dynamic force, which is reduced by natural lubrication or special substances.Momentum and energy transfer - partners exchange momentum, maintaining a rhythm of movement. Ideally, they reach harmonic oscillations, where the amplitude and frequency of movements are optimal.Center of mass - its po...
The Main Energy Ranges of Cosmic Rays
Last time I told you about eV, now you a smart enough to understand this post😌😌1. Low-energy particles Energy: less than 10⁹ eV (this is roughly the energy of a single gamma particle: stronger than a visible light photon, but still no superhero).Example: these particles have about the same energy as electrons in an old CRT television or a microwave. They kind of work, but honestly, they're not that impressive.Danger: No threat at all. These guys are so weak that Earth’s magnetic fi...
What is an electron-volt, and why do we need it?
An electron-volt is a unit of energy. But don’t think it’s some kind of super-powerful thing. It’s actually the smallest and most humble unit of energy physicists use because in the microscopic world, big numbers just make your brain hurt.How does an electron-volt work?Imagine you have a 1-volt battery. If an electron (a tiny and speedy guy) zips through the electric field of this battery, it gains an energy of 1 electron-volt. It’s like giving the electron a tiny kick and watching it sp...
What is the piece of shit this "Rigidity" I always try to calculate....
Rigidity of a particle is its ability to "punch through" magnetic fields(Yes, in space we have sooo fucking big magnetic field. Galactic one)Rigidity is the ratio of the particle’s momentum(kinda speed*mass, except photon ofc) to its charge. The greater the particle’s energy (momentum) and the smaller its charge, the harder it is to deflect its trajectory. In other words, the particle doesn’t care about the magnetic field: it keeps flying as if nothing can stop it. Rigidity is the ...
Are identical snowflakes possible?❄️💨
Surely you've wondered (well, maybe not always, who knows, but I find it fascinating) why no two snowflakes are alike?The secret lies in their unique journey of turning water into ice. It’s impossible to create completely identical conditions, only similar ones. Even temperature, which might seem stable, actually fluctuates every millisecond. What you see on weather forecasts or sensors is always an approximation.The slightest change in these conditions results in a completely different sn...
The ISS gym
There's a gym in space too, but they don't use it to build big ass — they use it to avoid losing it...👀ARED (Advanced Resistive Exercise Device) is a workout machine on the ISS that helps astronauts keep their muscles strong in zero gravity.Since regular dumbbells don’t work in space (no gravity), ARED uses vacuum cylinders. These cylinders create resistance, just like lifting something heavy on Earth. Instead of weights, it uses air pressure — the higher the pressure, the "...
Martian snow❄️
The closest place to Earth where snow falls is Mars. The average temperature on the Red Planet is a balmy -60 °C perfect for snow formation if you like your winters Siberian and your frostbite instant. But Martian snowfalls are nothing like the cozy, fluffy ones we know, thanks to its thin atmosphere and otherworldly climate.In 2008, NASA’s Phoenix lander observed water snow falling from clouds near Mars' north pole. This snow consists of tiny ice crystals, but because the atmospheric pre...
