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The Small Magellanic Cloud's greatest astronomical contribution is that it's the location where '''Henrietta Swan Leavitt''' first discovered the definite relationship between the variability period and the luminosity of a type of variable star later called [[Cepheid variables]].<ref>http://adsabs.harvard.edu/abs/1908AnHar..60...87L</ref>  Today Cepheid variables are used as standard candles for measuring extra-galactic distances.

The Small Magellanic Cloud's greatest astronomical contribution is that it's the location where '''Henrietta Swan Leavitt''' first discovered the definite relationship between the variability period and the luminosity of a type of variable star later called [[Cepheid variables]].<ref>http://adsabs.harvard.edu/abs/1908AnHar..60...87L</ref>  Today Cepheid variables are used as standard candles for measuring extra-galactic distances.

==References==

==References==

{{Galaxies}}

{{Galaxies}}