Holianyk Ihor
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How Many Galaxies Are in the Universe — And Why the Number Keeps Changing
When we gaze up at the night sky, it feels like we're seeing the entire universe stretched out before us. Stars shimmer, planets twinkle, and the Milky Way arcs overhead. But in reality, what we see is just a microscopic sliver of the cosmos. Beyond the familiar stars and nebulae lie billions — maybe trillions — of galaxies: vast cosmic islands made of stars, gas, dust, and dark matter.
By Holianyk Ihor9 months ago in Education
What Is Quantum Gravity, and What Does It Have to Do with the Universe?
Quantum gravity is one of the most mysterious — and ambitious — ideas in modern physics. It sits at the edge of what we currently understand, where two of science’s most powerful theories meet: Einstein’s general relativity and quantum mechanics. But what exactly is quantum gravity, and why does it matter for our understanding of the cosmos?
By Holianyk Ihor9 months ago in Education
What Will the Sky Look Like Millions of Years from Now?
The night sky feels eternal. The constellations seem fixed, the stars twinkle in familiar patterns, and the Moon and planets follow their predictable paths. But the universe is anything but static. It’s a cosmic dance of motion, transformation, and surprises. Fast-forward millions of years, and the sky above Earth will be almost unrecognizable.
By Holianyk Ihor9 months ago in Education
Why Are Heavy Elements Born in Stars?
To the naked eye, stars may look like tiny, steady points of light scattered across the night sky. But behind that calm shimmer lies a cosmic powerhouse — a nuclear forge where the very ingredients of life are born. Without the stars, there would be no Earth, no us, and no matter as we know it. One of the most important processes happening inside stars is the creation of heavy elements — the building blocks of everything solid in the universe. But why does this happen in stars?
By Holianyk Ihor9 months ago in Education
How Does Space Affect Biological Aging?
When we look up at the stars, we dream of exploration, discovery, and distant worlds. But what if space travel doesn't just change how we see the universe — what if it actually changes us? As it turns out, being in space can have a powerful impact on how our bodies age. And this isn't just a theory — we’ve got real evidence from real astronauts.
By Holianyk Ihor9 months ago in Education
What Are Magnetars? The Mystery of the Universe’s Most Powerful Magnets
Space is full of mysteries, but few are as exotic and enigmatic as magnetars — a rare type of neutron star with unimaginably strong magnetic fields. These cosmic titans both awe and terrify astronomers. But why? Let’s find out.
By Holianyk Ihor9 months ago in Education
