Cosmic Distance Ladder Calculator
Cepheid Variable Method
M = -2.43 * (log10(P) - 1) - 4.05
Formula
M = -2.43(log10(P) - 1) - 4.05 | d = 10^((m - M + 5)/5)
Frequently Asked Questions
What is the cosmic distance ladder?
A series of methods for measuring increasingly large distances: parallax, Cepheids, Type Ia supernovae, and redshift.
What are Cepheid variables?
Pulsating stars whose period is directly related to luminosity, making them standard candles for distance measurement.
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