At t = 1 x 10–43 seconds, the universe was incredibly small, dense and hot. This homogenous area of the universe spanned a region of only 1 x 10–33 centimeters (3.9 x 10–34 inches). Today, that same stretch of space spans billions of light years.Feb 16, 2021
What happened during the first 20 minutes of the universe?
Within 20 minutes, the temperature of the universe has become too cold to drive the process, which ceases with the formation of the nuclei of hydrogen and helium, the simplest and most common chemical elements in the universe.
What happened during the first moments of the universe?
In the first moments after the Big Bang, the universe was extremely hot and dense. As the universe cooled, conditions became just right to give rise to the building blocks of matter – the quarks and electrons of which we are all made.
What happened during the first second of the universe?
In its first second of existence, the universe was made up of fundamental particles, including quarks, electrons, photons, and neutrinos. Protons and neutrons then began to form. In the next few minutes, the universe as we know it took shape.
What is the first event of the universe?
the Big Bang The Universe begins 13.7 billion years ago with an event known as the Big Bang. Both time and space are created in this event. Nuclei of hydrogen, helium, lithium and other light elements form.
What was the universe like 5 billion years ago?
Our solar system is relatively young: it formed five billion years ago, when the universe was two thirds its present size. Over time the formation of stars has consumed the supply of gas in galaxies, and hence the population of stars is waning.
How will the universe end?
The Big Freeze. Astronomers once thought the universe could collapse in a Big Crunch. Now most agree it will end with a Big Freeze. If the expanding universe could not combat the collective inward pull of gravity, it would die in a Big Crunch, like the Big Bang played in reverse.
How far did the universe expand in the first second?
According to inflation theory, during the inflationary epoch about 10−32 of a second after the Big Bang, the universe suddenly expanded, and its volume increased by a factor of at least 1078 (an expansion of distance by a factor of at least 1026 in each of the three dimensions).
When did life first appear in the universe?
3.77 billion years ago The earliest time that life forms first appeared on Earth is at least 3.77 billion years ago, possibly as early as 4.28 billion years, or even 4.41 billion years—not long after the oceans formed 4.5 billion years ago, and after the formation of the Earth 4.54 billion years ago.
What do you notice about the first 1 second of the universe?
01 second after the beginning of the big bang. From this moment on, scientists feel they have a pretty good handle on how the universe evolved. The universe continued to expand and cool, and the subatomic particles formed during baryogenesis began to bond together. They formed neutrons and protons.