By noting how rapidly galaxies are flying apart from each other, and how far apart they are now, we can calculate how far back in time it was that they started to fly apart. No different than the question, "Since the time Pat and Sam both began their journey at the same point on the highway, they have traveled at a speed of 100 kilometers per hour. They are now 200 kilometers apart. How long have they been traveling apart from each other?"
The present calculations of the age of the Universe by this method -- about 13.7 billion years -- agree quite well with other calculations, that were derived in a totally independent manner.
The big bang.
What is known as the Big Bang Theory is the currently recognized model of how the universe began.
The "Cyclic Model," AKA the "Oscillating Universe Model."
the big bang theory is a cosmological model wich states that how was universe created and why it is expanding.
The most recognized model of how the universe began is the Big Bang theory. This theory proposes that the universe expanded from a very high-density and high-temperature state approximately 13.8 billion years ago, and has been expanding ever since.
The big bang.
What is known as the Big Bang Theory is the currently recognized model of how the universe began.
In the current model of the universe the big bang was the 1st thing to happen in the universe since time itself was created in the big bang.
the big bang theory is a cosmological model wich states that how was universe created and why it is expanding.
The "Cyclic Model," AKA the "Oscillating Universe Model."
the big bang theory is a cosmological model wich states that how was universe created and why it is expanding.
the big bang theory is a cosmological model wich states that how was universe created and why it is expanding.
The most recognized model of how the universe began is the Big Bang theory. This theory proposes that the universe expanded from a very high-density and high-temperature state approximately 13.8 billion years ago, and has been expanding ever since.
The steady state model assumes that new matter is created at the universe expands, the big bang theory states that no new matter is ever created, but only changes form.
Bubble theory. Big Bang theory.
That is called the Big Bang theory.
The steady state cosmological model is one such model that suggests the universe has always existed in a constant state, including the Earth. This model posits that new matter is continuously created to maintain a constant average density as the universe expands. However, this model is largely discredited in favor of the Big Bang theory, which describes a dynamic and evolving universe.