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In astronomy, the cosmic light horizon is a " horizon" which marks the edge of the visible universe. This horizon is the edge of a sphere, centered upon the Earth, which is approximately 13.7 billion light years in radius; this figure is sometimes referred to as the "lookback distance" (because astronomers, who view distant objects, are "looking back" into the history of the universe -- see: speed of light). The general homogeneity of temperatures, at the edge of the cosmic horizon, is part of the evidence for the " Big Bang".

Topics: Cosmic Light Horizon, Cosmic Inflation, Cosmic Background...

Cosmic inflationInflation is the idea—first proposed by Alan Guth (1981)—that the nascent universe passed through a phase of exponential expansion (the inflationary epoch) that was driven by a negative vacuum energy density (positive vacuum pressure). This expansion can	Cosmic background radiationWhen any patch of the sky is observed where no individual sources can be discerned, and the effects of interplanetary dust, and interstellar matter are taken into account, there is still radiation. This radiation is known as Cosmic Background Radiation .	Cosmic microwave background radiation2001 The cosmic microwave background radiation (CMB is a form of electromagnetic radiation that fills the whole of the universe. It has the characteristics of black body radiation at a temperature of 2. It has a frequency in the microwave range. CMB and t
Cosmic censorship hypothesisIn general relativity, the cosmic censorship hypothesis (or CCH for short) is a conjecture about the nature of singularities in spacetime. The CCH proposes that singularities are always hidden within event horizons, and therefore cannot be seen from the r	CosmicomicsCosmicomics is a series of short stories by Italo Calvino. Each story takes a scientific fact, and builds a wonderfully imaginative story around it. Every story is narrated by an always extant being called Qfyfq, who talks like a cranky old grandfather re	Cosmic noiseCosmic noise Random noise that originates outside the Earth's atmosphere. Note: Cosmic noise characteristics are similar to those of thermal noise. Cosmic noise is experienced at frequencies above about 15 MHz when highly directional antennas are pointed
Cosmic ray	Cosmic Slop	Cosmic variance
Cosmic light horizon	Cosmic string	Cosmic distance ladder
Cosmic Thing	Cosmic Encounter	Cosmic Encounter Online

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