Relative absolute dating differences
In addition, papers submitted by Stephen Hawking and other physicists showed that singularities were an inevitable initial condition of general relativity and a Big Bang model of cosmology.
In 1981, physicist Alan Guth theorized a period of rapid cosmic expansion (aka.
It is the entirety of time, space, matter and energy that began expanding some 13.8 billion years ago and has continued to expand ever since.
No one is entirely certain how extensive the Universe truly is, and no one is entirely sure how it will all end.
electromagnetic radiation and matter) and the physical laws that bind them.
After the initial expansion, the theory maintains that Universe cooled sufficiently to allow for the formation of subatomic particles, and later simple atoms.
Giant clouds of these primordial elements later coalesced through gravity to form stars and galaxies.
However, the earliest times of the Universe – lasting from approximately 10 seconds after the Big Bang – are the subject of extensive speculation.
Given that the laws of physics as we know them could not have existed at this time, it is difficult to fathom how the Universe could have been governed.