scientists

astronomy – How do we know what the sun is made of?

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The Sun, our closest star, has been a source of wonder and fascination throughout human history, illuminating the skies and nurturing life on Earth. Yet, despite its central role in our solar system, much about its intricate workings remains cloaked in mystery. How do scientists peel back the layers of this fiery giant to reveal … Read more

astronomy – What is dark matter and how do we know it exists?

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In the vast expanse of the universe, a mysterious and elusive substance lurks, shaping the very fabric of our cosmos without us even being able to see it. Dark matter, a term that might sound like something out of a sci-fi novel, is a fundamental component of the universe that constitutes approximately 27% of its … Read more