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🔭 Stellarzone | Space & Astronomy

@_stellarzone

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• | NASA discovery • Cosmic mysteries
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Sonoluminescence is one of the most fascinating phenomena in physics: light produced from sound. When intense ultrasonic sound waves travel through a liquid, they create microscopic bubbles that rapidly expand and then collapse. During the collapse, the bubble compresses so violently that the gas trapped inside reaches extremely high temperatures and pressures for a tiny fraction of a second, producing a brief flash of light that can last just a few billionths of a second. Although scientists can reproduce sonoluminescence consistently in laboratories, the exact mechanism responsible for the light emission is still being investigated. Researchers generally agree that the extreme conditions generated during bubble collapse play a central role, but questions remain about the detailed processes occurring inside the bubble. This remarkable phenomenon demonstrates how energy can transform in unexpected ways, turning invisible sound waves into visible flashes of light through the extraordinary physics of collapsing bubbles. by @_stellarzone
52
a month ago
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What if the Sun encountered a black hole? The Sun, formed about 4.6 billion years ago, could face a dramatic fate if it passed too close to a black hole. A black hole with a mass of 100–1,000 Suns could generate immense tidal forces, stretching the Sun and stripping away its outer layers to form a superheated accretion disk. During this process, the event could briefly shine with up to 1 trillion (10¹²) times the Sun’s luminosity, making it visible across vast regions of the universe. Earth would become uninhabitable long before the Sun’s final destruction. Oceans would evaporate, the atmosphere would be stripped away, and the planet’s surface would melt into a world of magma. Black holes do not “suck” objects in like cosmic vacuum cleaners. Instead, their powerful gravity gradually tears apart nearby stars and planets, converting them into streams of extremely hot matter. Age of the Sun: ~4.6 billion years Mass of the Sun: 1.989 × 10³⁰ kg Peak luminosity of the event: up to 10¹² times the Sun’s brightness #blackhole #Sun #Astronomy #Astrophysics #Space Cosmos Universe Science Physics by @_stellarzone
12
a month ago
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The ocean has been obeying the Moon for 4 billion years. This is a artistic physics simulation of lunar tides. The Moon's gravity pulls harder on the side of Earth facing it, stretching the ocean into a bulge that the planet then rotates through. That is why most coastlines get two high tides every day, dragged by an object that never makes contact with the water. Recreating it digitally took 24 hours of computing, using fluid simulation software that treats every wave as millions of individual particles reacting to the Moon's pull in real time. Tides did more than shape coastlines. Many scientists believe the constant mixing of shallow water they created is part of how early life on Earth got its start. A planet's entire ocean, moved by something that never touches it. #ocean #Space #moon #lunartides #technology by @_stellarzone
3
a month ago
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What if everything we see in the universe is made from something much smaller than atoms? String Theory is a theoretical idea in physics that says the smallest building blocks of the universe may not be tiny particles, but extremely small, one-dimensional objects called strings. These strings can vibrate in different ways. Think about a guitar string. When it vibrates differently, it produces a different sound. In a similar way, String Theory suggests that different vibrations of these tiny strings could appear as different particles, such as electrons and other fundamental particles. But String Theory is not only about particles. One of its biggest goals is to connect two major parts of physics: Quantum mechanics — the physics of the very small Gravity — the force that controls planets, stars, and galaxies The theory also suggests that there may be more dimensions of space than the three dimensions we experience. However, there is an important point: String Theory has not been experimentally proven yet. So, it remains a fascinating idea about what the universe might look like at its most fundamental level. The big question is: Are particles really tiny objects, or are they simply different vibrations of something deeper? by @_stellarzone
24
a month ago
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The geoid is an equipotential surface that can be thought of as the shape an ocean surface would take due to the Earth’s gravity field. The geoid height ranges from +85 m (Iceland) to −106 m (southern India). In this visualization the geoid height is greatly exaggerated, by a factor of 10,000. The geoid height visualized here comes from the gravity field model GOCO06s, a satellite-only global gravity field model computed by the GOCO (Gravity Observation Combination) project. It is based on over a billion observations acquired over 15 years from 19 satellites. These satellites include NASA’s Gravity Recovery and Climate Experiment (GRACE) and ESA’s Gravity field and steady-state Ocean Circulation Explorer (GOCE). by @_stellarzone
7
2 months ago
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This isn’t a comet—it’s a giant plume of water vapor erupting from the south pole of Enceladus, one of Saturn’s icy moons. The geysers shoot water and ice hundreds of kilometers into space, feeding Saturn’s E ring and providing some of the strongest evidence that a global ocean exists beneath the moon’s frozen surface by @_stellarzone
0
2 months ago
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The observable universe is 93,000,000,000 light years wide. Not the full universe. Just the part where light has had time to reach us. Beyond that — we have no idea. It could go on forever. The nearest star to Earth after our own Sun is Proxima Centauri — 4.24 light years away. At the speed of our fastest ever spacecraft, Voyager 1 — it would take 73,000 years to get there. That is our closest neighbour in space. The zoom you just watched started at the outer edge of everything humans have ever observed. It ended at you. And it still didn't show you how big it actually is. Did the size of the universe ever cross your mind before this? Follow @_stellarzone for more space related posts. by @_stellarzone
12
2 months ago
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NASA has been studying a distant galaxy known as Centaurus A. At the center, is a black hole that is sending a booming jet across the entire length of the galaxy. This is a sonification of the data. by @_stellarzone
10
3 months ago
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When the Soviet Venera landers touched down on Venus, they entered one of the most hostile environments ever explored by humanity. Surface temperatures soar to around 460°C, hot enough to melt lead, while atmospheric pressure is over 90 times that of Earth—equivalent to being nearly a kilometer underwater. On top of that, the atmosphere is thick with corrosive gases and sulfuric acid clouds. Despite these extreme conditions, several Venera probes survived long enough to accomplish the impossible. They lasted less than an hour before being crushed by pressure and destroyed by heat, but in those final moments, they transmitted something priceless: the only true photographs ever taken from the surface of Venus. Those grainy images show a barren, rock-strewn landscape under a dim, yellow-orange sky—a world where physics itself feels oppressive. Every pixel was sent through an atmosphere designed to destroy electronics, making the achievement as much an engineering triumph as a scientific one. The Venera missions stand as a reminder of how far humans have pushed exploration. Even in the most hellish place in the solar system, we managed to touch the surface, look around, and send proof back home. by @_stellarzone
8
3 months ago
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A neutron star is what remains after a massive star explodes in a supernova. It is so dense that a single teaspoon of its material would weigh billions of tons on Earth. Now imagine two of these incredibly dense objects locked in orbit, slowly spiraling toward each other over millions of years. As they get closer, they move faster and faster, distorting space-time and releasing energy in the form of gravitational waves. When they finally collide, the impact is catastrophic. In a fraction of a second, they release an enormous burst of energy — comparable to billions of Suns shining at once. This event is known as a kilonova. The collision produces powerful gamma-ray bursts and ejects matter at nearly the speed of light. These extreme conditions create heavy elements like gold and platinum — meaning the precious metals on Earth were likely formed in events like this. This is not just an explosion. It is one of the most extreme events in the universe, where gravity, energy, and matter reach their absolute limits. by @_stellarzone
0
3 months ago
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Engineers in 1958 designed a spacecraft that ran on nuclear explosions. Not a movie plot. Not a concept drawing. An actual government funded project with real engineers, real physics, and real test flights. Project Orion worked by detonating nuclear bombs — one every second — behind a massive steel disc called a pusher plate. Each explosion creates a shockwave. The shockwave hits the plate. The plate pushes the ship forward. Simple in concept. Extraordinary in execution. The numbers were staggering. Where Saturn V — the most powerful rocket ever built — could carry 45 tons to the Moon, an Orion spacecraft could carry 800 tons to orbit. That is not an improvement. That is a different category of capability entirely. Freeman Dyson — one of the greatest physicists of the 20th century — worked on this project and believed in it completely. He estimated Orion class vessels could reach Mars in 3 weeks. Jupiter in 6 months. The project was cancelled in 1963. Not because the physics failed. Not because engineers gave up. Because the Partial Nuclear Test Ban Treaty made atmospheric nuclear detonations illegal. Science said yes. Politics said no. The blueprints still exist. The physics still works. We just never went back. ☢️🚀 by @_stellarzone
27
3 months ago
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Astronomers found something unbelievable in deep space… An ocean beyond imagination Surrounding the distant APM 08279+5255 lies a massive cloud of water vapor— containing 140 trillion times more water than all of Earth’s oceans combined. This isn’t liquid water like on Earth. It’s vapor spread across space— orbiting a Quasar. Quasars are powered by matter falling into supermassive black holes, releasing enormous energy. Using radio telescopes, scientists detected this vast reservoir— proving something incredible: Even something as familiar as water… exists on cosmic scales. To put it in perspective: Everything you know as oceans— is almost nothing compared to this. The universe isn’t just stars and galaxies. It holds oceans… that we can barely comprehend. #Space #Astronomy #cosmos #universe by @_stellarzone
18
3 months ago
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