Astrophysics (index)

Cosmic Distance Ladder

(series of methods of measuring distance to astronomical objects)

The Cosmic Distance Ladder is a series of methods for measuring distance to stars, galaxies, and other astronomical bodies. The more accurate methods, typically limited in distance, are used to calibrate additional methods which handle longer distances, step-by-step, like climbing a ladder. The precision and accuracy of the methods generally decline with increasing distance, some methods being presumed no more accurate than 50%.

Methods:

Among the standard candles:


(measurement,distance)
http://en.wikipedia.org/wiki/Cosmic_distance_ladder
http://www.astro.ucla.edu/~wright/distance.htm

Referenced by:
Cepheid Variable
Standard Candle
Stellar Distance Determination

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