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by furyofantares
1597 days ago
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Earth is young in the milky way, 4.5 billion years, compared to 13+ billion year galaxy. There's lots of stars in the milky way that are billions of years older. You can limit your question to "just" those stars and ask, why didn't any of them produce life that expanded all over the galaxy (or why can't we see it if they did?) |
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