What happened in the early universe?
When the universe started cooling, the protons and neutrons began combining into ionized atoms of hydrogen (and eventually some helium). These ionized atoms of ...
As the universe continued to expand and cool, things began to happen more slowly. It took 380,000 years for electrons to be trapped in orbits around nuclei ...
What happened in the early universe? | Center for Astrophysics
About 13.8 billion years ago, the Big Bang gave rise to everything, everywhere, and everywhen—the entire known Universe. What caused the Big Bang?
The Early Universe - Las Cumbres Observatory
Cosmologists believe a process called inflation happened in the fraction of a second after the Big Bang. There was a strange type of vacuum energy that caused ...
Early Universe | Center for Astrophysics | Harvard & Smithsonian
The Early Years. Until roughly 380,000 years after the Big Bang, the entire universe was a thick opaque cloud of plasma of electrons and nuclei. As the universe ...
Chronology of the universe - Wikipedia
Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13.8 billion years ago.
Around 13.8 billion years ago, the universe expanded faster than the speed of light for a fraction of a second, a period called cosmic inflation. Scientists ...
Let there be light: What happened in the Early Universe? - Eso.org
Around 13.8 billion years ago, the Universe sprang into being, and started gradually transforming into the vast cosmos we know today.
Evolution of the Universe · Radiation Era. (The radiation era lasted for about 50,000 years); Planck Epoch. First 10-43 seconds after the Big Bang · Matter Era.
Early Universe - Webb Space Telescope
Astronomers have calculated that the universe is 13.8 billion years old. The Hubble Space Telescope has seen back to about 500 million years after the big bang.
Early Universe - an overview | ScienceDirect Topics
During this time, nuclear reactions took place, leading to the synthesis of light elements such as deuterium, helium-3, helium-4, and lithium-7. The relative ...
How Did the Universe Begin? - American Museum of Natural History
The Big Bang was the moment 13.8 billion years ago when the universe began as a tiny, dense, fireball that exploded.
The early universe - Symmetry Magazine
Immediately after the big bang, the universe was a hot, dense soup of particles, including Higgs bosons, quarks and what we now refer to as dark ...
The Beginning of the Universe | Astronomy
The reverse reaction also happened: a particle and antiparticle could collide and produce energy. (b) As the temperature of the universe decreased, the energy ...
Origins: CERN: Ideas: The Big Bang | Exploratorium
As the early universe cooled, the matter produced in the Big Bang gathered into stars and galaxies. Credit: Space Telescope Science Institute. How do we know ...
The history of the universe: Big Bang to now in 10 steps - Space.com
According to the Big Bang theory, the universe was born as a very hot, very dense, single point in space. Cosmologists are unsure what happened ...
Formation of the Universe | History, Theories & Timeline - Study.com
The Quark epoch: This epoch was the first in the early universe and the first to happen after the universe's four fundamental forces separated. It lasted ...
How are we able to observe the early universe? : r/askscience - Reddit
A search suggests this is possible because of a phenomenon called hyperinflation. The early universe was hot and dense, expanding faster than the speed of ...
When the universe was only 1 millisecond old, nuclei were hot enough and dense enough to fuse to create heavier elements, but it was so dense that the nuclei ...
NOVA Online | Runaway Universe | Universe Timeline (text) - PBS
As time moved forward, the pull of gravity exerted its influence on the early universe. It amplified slight irregularities in the density of the primordial gas.