mal4mac said:Do we know anything about the beginning of time?
Shouldn't that title be "The First Three Minutes Except For The First Fraction of a Nanosecond"?
danshawen said:There is a theory that time itself did not exist until there were electrons and photons
The Big Bang theory is the prevailing scientific explanation for the beginning of the universe. It suggests that about 13.8 billion years ago, all matter and energy in the universe was compressed into a singularity, a point of infinite density and temperature. This singularity then expanded rapidly, creating the universe as we know it today.
The Big Bang theory was first proposed by Belgian astronomer Georges Lemaître in the 1920s. It was further developed by American astronomer Edwin Hubble in the 1920s and 1930s, who observed that galaxies were moving away from each other at increasing speeds. In the 1960s, the discovery of the cosmic microwave background radiation, a remnant of the Big Bang, provided further evidence for the theory.
Aside from the cosmic microwave background radiation, there are several other pieces of evidence that support the Big Bang theory. These include the observed expansion of the universe, the abundance of light elements such as hydrogen and helium, and the large-scale structure of the universe.
The universe was too hot and dense for any atoms to form immediately after the Big Bang. Instead, it was a hot and dense soup of subatomic particles and radiation. As the universe expanded and cooled, protons and neutrons eventually combined to form the first atoms.
Based on current observations and theoretical models, scientists believe that the universe will continue to expand indefinitely. As it does so, it will become increasingly cold and dark as stars run out of fuel and galaxies drift apart. However, the ultimate fate of the universe is still a topic of ongoing research and debate.