How is the universe expanding if it is infinite?
The universe is expanding in time, not space.
It may seem counterintuitive, but in order to explain the universe's expansion from three dimensions, you must subtract one dimension and add time.
Next, imagine the universe as a ball. We sit on the outer surface of the ball, and it expands into and out of time. In other words, billions of years ago, objects in the universe were closer together, and our "ball" was much smaller. Consequently, the ball expands over time.
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According to current understanding based on observations of galaxies moving apart, the universe is expanding. This expansion is defined as the increasing distance between galaxies over time and does not require the universe to have a finite size or an edge; it can expand even if it is infinite.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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