Evidence.
See related question.
The Big Bang is the theory that was developed to describe the origins of the universe.
An accelerating universe is a theory which describes and seeks to explain the increasing rate of the expansion of the universe.
The Big Bang is a theory that discusses the origin of the universe (from a single point source of incredible density and energy) while the Nebular Hypothesis is a theory that discusses the origins of stars and their planetary systems (through the accretion of interstellar gas).
It is not so much that the universe is expanding, but rather the rationalization for its expansion that provides evidence to support the Big Bang Theory. The Big Bang supports interpreted observational evidence of the Cosmic Microwave Background Radiation (CMBR) barrier that there is an evolutionary expansion of the universe which promotes a finite age for the universe.
The Big Bang Theory holds that our present Universe was, about thirteen billion years ago, in an extremely more dense state and has been expanding from that ever since. A sub-set of that theory is that our Universe has gone through an infinite series of expansions: each of which lead to a gravitationally induced end to the expansion, then a collapse of the Universe into a state of extreme density, and then another expansion. This is called the "Oscillating Universe" Hypothesis The latest observations make the latter idea very unlikely, as our present Universe will almost certainly never cease its expansion. Either we are in the first oscillation of the Universe that failed to stop its expansion, or there were no oscillations prior to this one at all. Unless later observations show that our present conclusions are wrong, there will no oscillations after this Universe. It is difficult to imagine how we could ever determine if our Universe was the first oscillation that failed to end its expansion or if there were simply no oscillations prior to this expansion at all.
The Big Bang is the theory that was developed to describe the origins of the universe.
A theory of the origin and formation of the universe (the cosmos).
The expanding universe model
An accelerating universe is a theory which describes and seeks to explain the increasing rate of the expansion of the universe.
An accelerating universe is a theory which describes and seeks to explain the increasing rate of the expansion of the universe.
Relativity theory establishes a speed limit for objects travelling through space - but the expansion of the universe is the expansion of space. There is no speed limit for that expansion.
The term expansion of a Mini universe is a determinant that must be interpreted as the decaying process of configurations.red more, theory of expnasion sam sade
impact theory
The big bang theory which is a theory of cosmology holding that the expansion of the universe began with a gigantic explosion between 12 and 20 billion years ago
Steady state universe. Like they used to think it was.
It is not so much that the universe is expanding, but rather the rationalization for its expansion that provides evidence to support the Big Bang Theory. The Big Bang supports interpreted observational evidence of the Cosmic Microwave Background Radiation (CMBR) barrier that there is an evolutionary expansion of the universe which promotes a finite age for the universe.
The Big Bang is a theory that discusses the origin of the universe (from a single point source of incredible density and energy) while the Nebular Hypothesis is a theory that discusses the origins of stars and their planetary systems (through the accretion of interstellar gas).