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Dark Matter

✨ The invisible enigma

Dark matter is a type of matter that scientists believe exists throughout the universe, even though it cannot be seen directly. Unlike ordinary matter, which interacts with light and can be observed with telescopes, dark matter does not appear to emit, absorb, or reflect light.

Its presence is detected through its gravitational effects on galaxies, stars, and the large-scale structure of the universe. Scientists estimate that dark matter makes up about 25% of the universe, while ordinary matter, including stars, planets, and everything we can see, represents only a small part.

One of the strongest pieces of evidence for dark matter comes from observations showing that galaxies rotate faster than expected based on the visible matter they contain. Researchers are still trying to discover what dark matter is made of, and many experiments are searching for possible particles that could explain it.

Understanding dark matter is one of the major challenges in modern cosmology because it could reveal important information about the formation and evolution of the universe.

💡 Did you know?

Do you know that the universe is like a giant iceberg? The matter we see (stars, planets, you and me) represents only 5% of everything that exists. The rest is dark matter and dark energy. It's crazy to think that most of the universe is hidden from us!

Why is it called 'dark matter'? Not because it's black in color, but because it's 'obscure' to our instruments. It passes through walls, the Earth, and even your body without you feeling a thing! It's like a ghost haunting all of space.

Did you know? It's thanks to an astronomer named Vera Rubin that we had the best evidence of its existence. She noticed that stars at the edge of galaxies were spinning much too fast. Without invisible matter to hold them back, they should have flown away like horses on a carousel without bars!