Interstellar space is not truly empty
The seemingly empty space between stars is actually filled with sparse hydrogen atoms, the essential raw material for forming new stars and planets.
The vast emptiness between stars isn't actually empty; it's filled with incredibly sparse hydrogen atoms. These atoms are the universe's fundamental building blocks, making up about 90% of the interstellar medium. Imagine just one hydrogen atom in a cubic centimeter of space – that's how spread out they are, a stark contrast to Earth's atmosphere.
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