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I am confused about the age of the Universe.
If you calculate it by $1 / H_0$, won't the answer be roughly the same today as it will be 30 billion years from now?
I know $H_0$ is a parameter, not a constant, but it doesn't change that much, does it?
And if the expansion is accelerating then $H_0$ is going up, implying the age of the universe $1 / H_0 $ was higher in the past than it is today.