An endless Universe? Ah, maybe...
An interesting website named NovaPrism came up on my feed. It had an interesting explanation about the Universe. I had always read the Universe was the Big Bang and the matter it created and we see (part of it). But now we are talking about infinite. Space is flat meaning if I started travelling now I could carry on forever. But that sounds a bit silly, so what does it mean? It stated ‘ To understand how this is possible, it helps to separate the universe into two parts. The "observable universe" is the spherical bubble of space visible from Earth. Because the universe is 13.8 billion years old, light has only had that much time to reach telescopes, creating a visible horizon about 93 billion light-years across. This observable bubble is strictly finite, containing a limited number of galaxies. But the observable universe is just the region whose light has reached Earth. So, the ‘universe’ is what we live in and see. The result of the ‘explosion’ (really ...