Fake without exception. Back to the topic at hand:
There seems to be a fundamental misunderstanding of the way the universe's expansion works. The universe is not expanding into anything. It is creating the space as it goes. While there may be other universes, there is no "outside" of the universe, because there are no spacial dimensions for an outside to exist in.
The exansion of the universe should slow down because of the effect of the universe's matter's gravity, which as we know is the bending of space, should slow it down, even reverse it. If there is enough matter in the universe we would expect gravity to curve the universe's topology away from flat into itself, creating a curved universe. If we imagine the universe to consist of two-dimensional space we can represent the closed universe as a sphere. As the Senior Wrangler of Unseen University said of the unusually round world Earth in The Science of Discworld, "it's hard to get used to directions here. Wherever you point, it's at the back of your own head." Travelling for a sufficient time in any one direction in a closed universe, allowing for expansion, will lead your back to your starting point.
As it is, it is becoming increasingly unlikely that the universe is closed, but it makes the topology of the universe rather more difficult to describe. In addition, while there appears to be insufficient matter in the universe to account for the gravity we observe (assuming that it is not down to a basic error of observation deep in the calculations), implying that there is a very large amount of unobserved matter in the universe (with the properties of being both cold and dark), the rate of the universe's expansion is not slowing at all, but increasing. We do not as yet know why.
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