What does "standard candle" mean?

Any astronomical object of known absolute magnitude. Its distance can then be calculated from its apparent magnitude.

What is a synonym for "standard candle"?

Common synonyms include: candela, candle, cd, supernovae.

noun

noun ·Rare ·Advanced level

Noun

1
Any astronomical object of known absolute magnitude. Its distance can then be calculated from its apparent magnitude.
2
the basic unit of luminous intensity adopted under the Systeme International d'Unites; equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2,046 degrees Kelvin wordnet