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Atoms are the fundamental "Lego bricks" of the universe, constructing everything from the screen you are reading this on to the very cells of your body. Despite making up everything we see, they are so small that a single strand of human hair is as thick as roughly stacked on top of each other. The Miracle of Empty Space

: If you were to remove all the empty space from every person on Earth, the entire human population would fit inside the volume of a single apple. A Stardust Heritage Atoms are the fundamental "Lego bricks" of the

: If an atom were expanded to the size of a professional sports stadium, the nucleus (where almost all the mass lives) would be no larger than a marble sitting on the 50-yard line. A Stardust Heritage : If an atom were

: The simplest atoms, like hydrogen and helium, were created in the first few minutes after the universe began. like hydrogen and helium