Deep Time: Crash Course Astronomy #45
As we approach the end of Crash Course Astronomy, it's time now to acknowledge that our Universe's days are numbered. Stars will die out after a few trillion ...
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Compared to human experience, the Universe has been around a long time: nearly 14 billion years. That’s a soul-crushingly long time. That’s older than Earth, older than the Sun, older than, well, everything. Pretty much by definition. And yet, when you think about time itself, how long is 14 billion years, really? It seems like a long time to us, now. But time keeps on slippin’ into the future, and every day the Universe is a little bit older. I mean sure, duh, of course it is. But have you ever really thought about what that means? Someday the Universe will be 20 billion years old. 30. Then 50 billion, a hundred billion, a trillion… and even then the clock still ticks. Those numbers sound abstract, but those days will inevitably come. Time runs long. What will the Universe look l...
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Compared to human experience, the Universe has been around a long time: nearly 14 billion years. That’s a soul-crushingly long time. That’s older than Earth, older than the Sun, older than, well, everything. Pretty much by definition. And yet, when you think about time itself, how long is 14 billion years, really? It seems like a long time to us, now. But time keeps on slippin’ into the future, and every day the Universe is a little bit older. I mean sure, duh, of course it is. But have you ever really thought about what that means? Someday the Universe will be 20 billion years old. 30. Then 50 billion, a hundred billion, a trillion… and even then the clock still ticks. Those numbers sound abstract, but those days will inevitably come. Time runs long. What will the Universe look l...
