Big Bang cosmology. Cosmological horizons set the size and scale of the observable universe. This article explains a number of these horizons. The particle...

The particle horizon (also called the cosmological horizon, the comoving horizon (in Scott Dodelson's text), or the cosmic light horizon) is the maximum...

and Killing horizons. The photon spheres and ergospheres of the Kerr solution. Particle and cosmological horizons relevant to cosmology. Isolated and...

or cosmological constant. A space with a cosmological constant is qualitatively different: instead of moving outward, the cosmological horizon stays...

gravitational repulsion in the cosmological context, which accelerates the expansion of the universe. A cosmological constant also has this effect. Mathematically...

no apparent horizon, ever, despite the fact that there is certainly an event horizon. Absolute horizon Cosmological horizon Particle horizon Ergosphere...

Einstein's equation with a positive cosmological constant. It is spherically symmetric and it has a cosmological horizon surrounding any observer, and describes...

Apparent horizon, a surface defined in general relativity Cauchy horizon, a surface found in the study of Cauchy problems Cosmological horizon, a limit...

Cauchy horizon, a surface found in the study of Cauchy problems Celestial horizon, a great circle parallel to the horizon Cosmological horizon, a limit...

Cosmic time, or cosmological time, is the time coordinate commonly used in the Big Bang models of physical cosmology. This concept of time avoids some...

cone, which delimits the cosmological horizon. The cosmological horizon, also called the particle horizon or the light horizon, is the maximum distance...

He accepts that the multiverse is thought to exist far beyond the cosmological horizon. He emphasized that it is theorized to be so far away that it is...

thus introduce effects not seen in more standard cosmological models. Some versions of brane cosmology, based on the large extra dimension idea, can explain...

The horizon problem (also known as the homogeneity problem) is a cosmological fine-tuning problem within the Big Bang model of the universe. It arises...

the cosmological principle to apply at scales beyond roughly 300 million light-years. This led cosmologists to seek an explanation to the horizon problem...

"Sinks in the landscape, Boltzmann brains and the cosmological constant problem". Journal of Cosmology and Astroparticle Physics. 2007 (1): 022. arXiv:hep-th/0611043...

the cosmological principle. The universality of physical laws is one of the underlying principles of the theory of relativity. The cosmological principle...

light-years. The limit of observability in the universe is set by cosmological horizons which limit—based on various physical constraints—the extent to...

the Hawking radiation emitted from the de Sitter space's bounded cosmological horizon. One estimate for the average time required until nucleation is around...

A non-standard cosmology is any physical cosmological model of the universe that was, or still is, proposed as an alternative to the then-current standard...

for cosmological recession velocities, cosmological gravitational differentials, or cosmological horizons. The use of different rules for cosmological and...

Lambda-CDM model List of astrophysicists Non-standard cosmology Taiji (philosophy) Timeline of cosmological theories Universal rotation curve Warm inflation...

deciding the fate and evolution of the universe has become a valid cosmological question, being beyond the mostly untestable constraints of mythological...

is the correct theory of gravity on cosmological scales. It emerged in the late 1990s as a concordance cosmology, after a period of time when disparate...

observer and is a measure of cosmological time. The comoving spatial coordinates tell where an event occurs while cosmological time tells when an event occurs...

the universe Horizons: Exploring the Universe – Astronomy textbook Lambda-CDM model – Model of Big Bang cosmology List of cosmological computation software –...

event horizon of a non-rotating black hole would fall into its center within a finite period of time. The classical version of the Big Bang cosmological model...

constant in various cosmological models so that the Hubble limit does not, in general, coincide with a cosmological event horizon. For example, in a decelerating...

isotropicity in composition and identical age since Big Bang within cosmological horizon, expressed as: Ordinary [baryonic] mass of observable universe /...

expansion of the universe has removed the local supercluster beyond the cosmological horizon (at about 150 billion years). In radiocarbon dating, the "present"...