4 ms·
I would imagine it's done using some kind of estimate of the known current rate of expansion and assuming some kind of model for the rate of acceleration.
by diziet 17y ago
I would imagine it's done using some kind of estimate of the known current rate of expansion and assuming some kind of model for the rate of acceleration.
- Patient0 17y agoI thought that if the universe is "open" then it is only the visible universe that is finite, and the rest is actually infinite. i.e. there's stars "all the way" it's just that we can only see stuff 14 billion light years away. Another point: in one part it says "we are probably not at the center" - I thought the notion of a "center of the universe" was meaningless in the same sense that any point on a sphere is not "the center" (if the universe is "closed"), and you can't have a "center" of an infinite plane (if the universe is "open").
- yread 17y agoYeah I was wondering about that, too. The funny thing is the universe is supposed to be 13.73 billion years old but even wikipedia states 93 billion light years as a size estimate.