// todo need optimize like in event.jsp. Add indexing or not indexing this page. Leavitt discovers 2400 Cepheid variable stars and develops her period-luminosity theory (1 Jan 1902 Jahr – 1 Jan 1908 Jahr) (Band der Zeit)
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Leavitt discovers 2400 Cepheid variable stars and develops her period-luminosity theory (1 Jan 1902 Jahr – 1 Jan 1908 Jahr)

Zugefügt zum Band der Zeit:

big history project timeline

ByAlia
23 Jan 2018

Datum:

1 Jan 1902 Jahr
1 Jan 1908 Jahr
~ 6 years
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