";s:4:"text";s:2907:" Here's how we know the Universe isn't expanding differently in different directions. The observable universe is the region of the universe we can observe, defined by how far light has traveled since the Big Bang 13.8 billion years ago. The expanding universe is a complicated place. I’m not an expert, but my understanding is that the metric of space is changing for a reason that is not presently known. Isn’t the expansion of the universe to be understood as an expansion of space itself, which is the reason for increased travel speed on the edges of the observable university? Either the Universe is infinite, going on forever, or its finite, with a limited volume. The observable universe is a somewhat different story. One famous analogy to explain the expanding universe is imagining the universe like a loaf of raisin bread dough. Many alternative explanations could explain this one observable fact; the Big Bang is … One famous analogy to explain the expanding universe is imagining the universe like a loaf of raisin bread dough. The primary evidence for the expanding universe concept is the redshift of light from distant galaxies, which increases with distance of the galaxy from Earth. According to the theory of cosmic inflation, the entire universe’s size is at least 10^23 times larger than the size of the observable universe. The definition of the Universe is that it contains everything. The universe carried on expanding and cooling, but at a fraction of the initial rate. In Big Bang cosmology, the observable universe is what, in theory, can be seen from Earth.That is light, or other signals, which has had time to reach the Earth since the beginning of the cosmological expansion. We cannot know for sure what lies beyond the enclave our instruments can detect. actual universe is bounded by the edge of the observable universe. $\begingroup$ Ben, the sticking point (just personally for me) is referring to an observable universe. The short answer is that this is a nonsense question, the Universe isn't expanding into anything, it's just expanding. T he Observable Universe is roughly 90-Billion Light Years in diameter, and estimated to be 13.5-Billion years old, because it … The expansion of the universe is the increase in distance between any two given gravitationally unbound parts of the observable universe with time.
The Hubble law implies that distances are increasing between In 1929 Edwin Hubble announced that he had measured the speed of galaxies at different distances from us, and had discovered that the farther they were, the faster they were receding. The universe is not expanding out from a centre into space; rather, the whole universe is expanding and it is doing so equally at all places, as far as we can tell. Well, our universe does have an edge — that is, if by "our universe," you mean the observable universe. ";s:7:"keyword";s:36:"is the observable universe expanding";s:5:"links";s:957:"Neeyum Naanum Sernthey Song,
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