Orbit
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Where Does Space End? It Must End Somewhere!
Orbit replied to Edisonian's topic in Astronomy and Cosmology
I universe could be sphere shaped, when the big bang happened all of the universe was scattered hot. As it expands it cools. Think of a baloon with spirals for galaxys on it, the more you blow the bigger it gets and the longer way the other galaxy is from the other one. When the universe has compelety cooled it might collapse in on itself to make a big crush that could be the start of another universe. -
I heard abousloute zero was -273 celius.