What is Theoretical Cosmology? Theoretical cosmologists study the evolution and composition of the universe as a system, constructing theories and confronting them with experiments and observations..
Today most cosmologists think that the universe was created during the big bang about 13.8 billion years ago, and it is expanding at an ever-increasing rate.
The cosmos is woven into a fabric we call space-time, which is embroidered with a cosmic web of brilliant galaxies and invisible dark matter..
Our universe began with an explosion of space itself - the Big Bang.
Starting from extremely high density and temperature, space expanded, the universe cooled, and the simplest elements formed.
Gravity gradually drew matter together to form the first stars and the first galaxies..
The universe, by definition, is a unique object or system
Cosmology does not undertake to establish laws about universes; at best one can establish laws about the constituents of the universe
The relation that the observable portion of the universe bears to the universe is that of part to presumed whole, rather than that of instance to law
Cosmology is a branch of astronomy that involves the origin and evolution of the universe, from the Big Bang to today and on into the future
According to NASA, the definition of cosmology is "the scientific study of the large scale properties of the universe as a whole
"Cosmology deals with the world as the totality of space, time and all phenomena. Historically, it has had quite a broad scope, and in many cases was founded in religion. In modern use metaphysical cosmology addresses questions about the Universe which are beyond the scope of science.
,Images of cosmology explana…See allSee more images of cosmology explanation×Cosmology is a branch of astronomy that studies the origin, evolution, structure and relationships of the universe as a whole. Cosmology can also be a system of beliefs that explains the universe in terms of order, harmony and phenomena. Cosmology can address questions that are beyond the scope of science, such as the meaning and purpose of the universe.