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Significados de billion years em inglês
10⁹ Years; geological unit of time.
Termos relacionados
Uso de billion years em inglês
1
Links: Did Andromeda crash into the Milky Way 10 billion years ago?
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In other words: It's hard to debug 3 billion years of evolution.
3
More than two billion years ago, sand settled on the ocean floor.
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We've had like a stable amount for the last several billion years.
5
And Earth will probably be habitable for another billion years or so.
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After all, life did perfectly well for three billion years without them.
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The Sun is a fairly young star, only five billion years old.
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A hint at what was to befall in a few billion years.
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For two billion years bacterial organisms were the only forms of life.
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Twenty million years feels short when it is half a billion years ago.
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Four billion years later people began to wonder how it had all happened.
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Estimates run from forty billion years to one hundred billion years.
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And four billion years ago, Earth was frequently struck by meteors.
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The company says fusion could eventually supply a billion years worth of electricity.
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Once, we were assured that it would take five billion years to happen.
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But rest assured, that won't happen for another six billion years or so.