That's what Hubble can do for us. It can tell us whether the universe is expanding forever or if one day it's going to come back together.
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“We will all, someday, experience death, and become obsolete as a dead leaf falling from a tree, crushed by passersby to ashes underlying the earth.”
“Scare answers to scare, and force begets force, until at length it comes to be seen that we are racing one against another after a phantom security which continually vanishes as we approach.”