cyclic model - Article Index

Encyclopedia - Dark Energy: Encyclopedia - Dark Energy
edit In cosmology, dark energy is a hypothetical form of energy which permeates all of space and has strong negative pressure. According ...   » Read the article

Encyclopedia - Multiverse: Encyclopedia - Multiverse
edit A multiverse (or meta-universe) is the hypothetical set of multiple possible universes, including the observable universe, which com...   » Read the article

Encyclopedia - Timeline Of The Big Bang: Encyclopedia Ii - Timeline Of The Big Bang - The Very Early Universe
All our understanding of the very early universe is very speculative. No accelerator experiments probe sufficiently high energies to prov...   » Read the article

Encyclopedia - Non-standard Cosmology: Encyclopedia Ii - Non-standard Cosmology - Non-standard Cosmologies
There have been a number of non-standard models which have been proposed. Standard responses to some of the claims made in by the variabl...   » Read the article

Encyclopedia - Ekpyrotic: Encyclopedia Ii - Ekpyrotic - Introduction
Brane cosmology assumes that the visible universe lies on a four-dimensional brane which moves in higher dimensional space. Our brane may...   » Read the article

Encyclopedia - Non-standard Cosmology: Encyclopedia Ii - Non-standard Cosmology - Non-standard Cosmologies
There have been a number of non-standard models which have been proposed. Standard responses to some of the claims made in by the variabl...   » Read the article

Encyclopedia - Multiverse: Encyclopedia Ii - Multiverse - Multiverse Hypotheses In Physics
Multiverse - Classification. According to Max Tegmark, the existence of other universes are a direct implication of cosmological observ...   » Read the article

Encyclopedia - Dark Energy: Encyclopedia Ii - Dark Energy - Nature Of Dark Energy
The exact nature of this dark energy is a matter of speculation. It is known to be very homogeneous, not very dense and doesn't interact ...   » Read the article

Encyclopedia - Timeline Of The Big Bang: Encyclopedia Ii - Timeline Of The Big Bang - Structure Formation
Structure formation in the big bang model proceeds hierarchically, with smaller structures forming before larger ones. The first structur...   » Read the article

Encyclopedia - Timeline Of The Big Bang: Encyclopedia Ii - Timeline Of The Big Bang - The Early Universe
At this time, the universe is filled with a quark-gluon plasma. Timeline of the Big Bang - The electroweak epoch – 10-12 s. See also...   » Read the article

Encyclopedia - Dark Energy: Encyclopedia Ii - Dark Energy - Evidence For Dark Energy
During the late 1990s, observations of type Ia supernovae ("one a") suggested that the expansion of the universe is accelerating. These o...   » Read the article

Encyclopedia - Non-standard Cosmology: Encyclopedia Ii - Non-standard Cosmology - Non-standard Versus Standard
Non-standard cosmologies are usually not considered by physicists, because the essentials of the big bang theory have been confirmed by a...   » Read the article

Encyclopedia - Non-standard Cosmology: Encyclopedia Ii - Non-standard Cosmology - Nucleosynthesis Objections To Non-standard Cosmologies
One of the major successes of the Big Bang theory has been to provide a prediction that corresponds to the observations of the abundance ...   » Read the article

Encyclopedia - Non-standard Cosmology: Encyclopedia Ii - Non-standard Cosmology - History
Since the discovery of the cosmic microwave background by Penzias and Robert Wilson in 1965, most cosmologists have concluded that observ...   » Read the article

Encyclopedia - Dark Energy: Encyclopedia Ii - Dark Energy - Implications For The Fate Of The Universe
Cosmologists estimate that the acceleration began roughly 5 billion years ago. Before that, it is thought that the expansion was decelera...   » Read the article

Encyclopedia - Dark Energy: Encyclopedia Ii - Dark Energy - History
The cosmological constant was first proposed by Einstein as a mechanism to obtain a stable solution of the gravitational field equation t...   » Read the article

Encyclopedia - Ekpyrotic: Encyclopedia Ii - Ekpyrotic - Outstanding Problems
There are major outstanding problems with the ekpyrotic scenario. Foremost among them is that colliding branes are not understood by stri...   » Read the article

Encyclopedia - Multiverse: Encyclopedia Ii - Multiverse - Arguments Against Multiverse Theories
It's not science. Critics claim that there is a lack of empirical correlation and testability in these theories and thus they are without...   » Read the article

Encyclopedia - Non-standard Cosmology: Encyclopedia Ii - Non-standard Cosmology - Non-standard Versus Standard
Non-standard cosmologies are usually not considered by physicists, because the essentials of the big bang theory have been confirmed by a...   » Read the article

Encyclopedia - Non-standard Cosmology: Encyclopedia Ii - Non-standard Cosmology - History
Since the discovery of the cosmic microwave background by Penzias and Robert Wilson in 1965, most cosmologists have concluded that observ...   » Read the article

Encyclopedia - Non-standard Cosmology: Encyclopedia Ii - Non-standard Cosmology - Nucleosynthesis Objections To Non-standard Cosmologies
One of the major successes of the Big Bang theory has been to provide a prediction that corresponds to the observations of the abundance ...   » Read the article

Encyclopedia - Dark Energy: Encyclopedia Ii - Dark Energy - Evidence For Dark Energy
During the late 1990s, observations of type Ia supernovae suggested that the expansion of the universe is accelerating. These observation...   » Read the article

Encyclopedia - Multiverse: Encyclopedia Ii - Multiverse - Multiverse Hypotheses In Philosophy
Multiverse - Anthropic principle. The concept of other universes has been proposed to explain why our universe seems to be fine-tuned f...   » Read the article