How was the universe before the Big Bang?
It’s possible that before the Big Bang, the universe was an infinite stretch of an ultrahot, dense material, persisting in a steady state until, for some reason, the Big Bang occured. This extra-dense universe may have been governed by quantum mechanics, the physics of the extremely small scale, Carroll said.
How did things form after the Big Bang?
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. During the first three minutes of the universe, the light elements were born during a process known as Big Bang nucleosynthesis.
Did space exist before the Big Bang?
The universal origin story known as the Big Bang postulates that, 13.7 billion years ago, our universe emerged from a singularity — a point of infinite density and gravity — and that before this event, space and time did not exist (which means the Big Bang took place at no place and no time).
How did everything in the universe come to be?
In the early years, everything was made of gas. This gas, mostly hydrogen and helium, expanded and cooled. Over billions of years, gravity caused gas and dust to form galaxies, stars , planets, and more. The matter that spread out from the Big Bang developed into everything in the universe, including you.
What is the widely accepted theory on the origin of the universe?
Throughout history, countless myths and scientific theories have tried to explain the universe’s origins. The most widely accepted explanation is the big bang theory.
How can the universe come from nothing?
From just empty space itself — although it is empty space filled with a large amount of field energy — a natural process has created the entire observable Universe, rich in structure, as we see it today. That’s the big idea of getting a Universe from nothing, but it isn’t satisfying to everyone.
What’s behind a black hole?
The prevailing theory is that the corona forms after gas falls continuously into the black hole, forming a spinning disk around it, “like water flushing down a drain.” The gas disk is then heated up to millions of degrees, generating a twisted magnetic field that eventually snaps, releasing its energy and producing the …
How long until the universe ends?
22 billion years in the future is the earliest possible end of the Universe in the Big Rip scenario, assuming a model of dark energy with w = −1.5. False vacuum decay may occur in 20 to 30 billion years if the Higgs field is metastable.