Dec 13, 2015 · The radius of the observable universe is about 46 billion light-years, which is considerably greater than its age of about 14 billion years. The radius of the observable universe is defined by the greatest distance from which light would have had time to reach us since the Big Bang, so you might think that it would lie at a distance of only 14 billion light-years, since x=ct …

Jan 28, 2018 · The universe has been expanding ever since. But we can observe the cosmic microwave background which is the remnants of the big bang and the time when everything was densely packed together. Therefore I do not understand how there can be anything we can't observe if we can observe the beginning of the universe itself? Please can someone help?

Jul 30, 2014 · The discussion centers on using the analogy of grains of sand to represent stars in the universe, aiming to help students grasp the vast scale of cosmic structures. It is estimated that the number of stars in the observable universe could be around 4 x 10^22, comparable to the estimated grains of sand on Earth's beaches, which is roughly 10^21. The Milky Way is …

Mar 19, 2025 · All we know is that the universe is significantly larger than the observable universe. I think current measurements estimate the size of the whole universe to be at least 100 times the diameter of the observable universe.

Dec 29, 2019 · Hi, I'm only trying to understand the basic concept. Did the big bang give rise to both observable and non-observable universe? I have been through quite a few source and it seems like that the big bang was the cause of only observable universe and not of unobservable universe. Below I have...

May 1, 2015 · If you take the size of the observable universe can you find out how many cubic plank lengths can fit in the observable universe and it doesn't have to be exact just approximation.Also the math and formulas would be helpful too.

Mar 16, 2024 · The observable universe refers to the portion of the universe that we can see or detect, limited by the finite time light has traveled since the Big Bang. It has a finite volume. The term “universe,” however, encompasses all of existence and could be finite or infinite, depending on its curvature and topology.

Apr 5, 2014 · The observable universe's radius is estimated at about 45 billion light years, so its total volume would be 3.7*10^32 cubic light years, or 37 with 31 zeroes. This makes our solar system as 'explored' by Voyager be a whooping 0.00000000000000000000000000000001 percent of the observable universe.

Jan 21, 2025 · Some documents show that electromagnetic waves have no limit in theory, but the size of the universe limits the lower limit of wavelength, but I don't know whether it refers to the observable universe or the whole universe, because the observable universe is …

Mar 8, 2006 · According to the inflation model, the universe is much bigger than the observable universe. On the other hand, the total universe is is still finite, but there is no such thing as outside. The simplest analogy is what is outside the surface of …