The
initial singularity
is a singularity predicted by some models of the Big Bang theory to have existed before the Big Bang and thought to have contained all the energy and spacetime of the Universe.
What came before the singularity?
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).
What was there before the universe was formed?
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.
What was the only item that originally existed in the universe?
But more than 13 billion years ago, following the big bang, the early universe was hot, and all that existed were a few types of
atoms, mostly helium and hydrogen
. As atoms combined to form the first molecules, the universe was finally able to cool and began to take shape.
How did time begin?
According to the general theory of relativity, space, or the universe, emerged
in the Big Bang
some 13.7 billion years ago. … “In the theory of relativity, the concept of time begins with the Big Bang the same way as parallels of latitude begin at the North Pole.
Does the universe end?
The end result is unknown
; a simple estimation would have all the matter and space-time in the universe collapse into a dimensionless singularity back into how the universe started with the Big Bang, but at these scales unknown quantum effects need to be considered (see Quantum gravity).
What is outside the universe?
The universe, being all there is, is infinitely big and has no edge, so
there's no outside to
even talk about. … The current width of the observable universe is about 90 billion light-years. And presumably, beyond that boundary, there's a bunch of other random stars and galaxies.
What is the hot early universe?
In the first moments after the Big Bang, the universe was extremely hot and dense. … These were mainly
helium and hydrogen
, which are still by far the most abundant elements in the universe. Present observations suggest that the first stars formed from clouds of gas around 150–200 million years after the Big Bang.
Who created universe?
Many religious persons, including many scientists, hold that
God
created the universe and the various processes driving physical and biological evolution and that these processes then resulted in the creation of galaxies, our solar system, and life on Earth.
How old is our universe?
Using data from the Planck space observatory, they found the universe to be
approximately 13.8 billion years old
.
How many universes are there?
There
are still some scientists who would say, hogwash. The only meaningful answer to the question of
how many universes there
are is one, only one
universe
.
What year did time start?
The measurement of time began with the invention of sundials in ancient Egypt some time
prior to 1500 B.C.
However, the time the Egyptians measured was not the same as the time today's clocks measure. For the Egyptians, and indeed for a further three millennia, the basic unit of time was the period of daylight.
Is time an illusion?
According to theoretical physicist Carlo Rovelli,
time is an illusion
: our naive perception of its flow doesn't correspond to physical reality. Indeed, as Rovelli argues in The Order of Time, much more is illusory, including Isaac Newton's picture of a universally ticking clock.
Why is time a concept?
The concept of time is simply
an illusion made up of human memories, everything that has ever been and ever will be is happening right now
. That is the theory according to a group of esteemed scientists who aim to solve one of the universe's mysteries.
Does the galaxy end?
Many think it's likely you would just keep passing galaxies in every direction, forever. In that case, the universe would be infinite,
with no end
. … Scientists now consider it unlikely the universe has an end – a region where the galaxies stop or where there would be a barrier of some kind marking the end of space.
How long will universe last?
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 Higgs boson field is metastable.
