10 relations: CL1358+62, Comoving and proper distances, Distance measures (cosmology), Epoch (astronomy), Giga-, Light-year, List of the most distant astronomical objects, Redshift, Triangulum, W. M. Keck Observatory.

## CL1358+62

CL 1358+62 (ClG 1358+62) is a galaxy cluster located at z.

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## Comoving and proper distances

In standard cosmology, comoving distance and proper distance are two closely related distance measures used by cosmologists to define distances between objects.

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## Distance measures (cosmology)

Distance measures are used in physical cosmology to give a natural notion of the distance between two objects or events in the universe.

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## Epoch (astronomy)

In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as the celestial coordinates or elliptical orbital elements of a celestial body, because these are subject to perturbations and vary with time.

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## Giga-

Giga is a unit prefix in the metric system denoting a factor of a (short-form) billion (109 or 000).

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## Light-year

The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.

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## List of the most distant astronomical objects

This article documents the most distant astronomical objects so far discovered, and the time periods in which they were so classified.

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## Redshift

In physics, redshift happens when light or other electromagnetic radiation from an object is increased in wavelength, or shifted to the red end of the spectrum.

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## Triangulum

Triangulum is a small constellation in the northern sky.

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## W. M. Keck Observatory

The W. M. Keck Observatory is a two-telescope astronomical observatory at an elevation of 4,145 meters (13,600 ft) near the summit of Mauna Kea in the U.S. state of Hawaii.

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