Table of Contents
Is it possible for another Big Bang to occur?
What they can agree on is, it’s likely to occur somewhere between 2.5-22 billion years from now. We’ll have to find another universe to inhabit before that, if such a thing exists and if it’s habitable to our species. There are three prevailing theories on how the universe will end. One is the Big Crunch.
Was all matter created in the Big Bang?
Most of the hydrogen and helium in the Universe were created in the moments after the Big Bang. Heavier elements came later. The explosive power of supernovae creates and disperses a wide range of elements.
What was the only thing that existed immediately after the Big Bang?
According to NASA, after inflation the growth of the universe continued, but at a slower rate. As space expanded, the universe cooled and matter formed. One second after the Big Bang, the universe was filled with neutrons, protons, electrons, anti-electrons, photons and neutrinos.
What could have gone wrong in the first few seconds of the universe?
What could have gone wrong in the first few seconds of the Universe? If gravity had been stronger, everything would have collapsed on itself. Weaker, and stars would never have formed.
How can the universe be infinite?
If the universe is perfectly geometrically flat, then it can be infinite. If it’s curved, like Earth’s surface, then it has finite volume. Current observations and measurements of the curvature of the universe indicate that it is almost perfectly flat. You might think this means the universe is infinite.
Why universe is not a black hole?
Originally Answered: If the big bang was almost infinitely dense (like a huge star) why didn’t the universe immediately become a black hole? It started very hot and also expanding. Space itself was expanding. The reason it didn’t collapse is because it was expanding so fast.
How big was the universe at 1 second old?
The Universe was once just the radius of the Earth-to-the-Sun, which happened when the Universe was about a trillionth (10-12) of a second old. The expansion rate of the Universe back then was 1029 times what it is today.