Public Timelines

For educational institutions For teachers For students Cabinet

For educational institutions For teachers For students Open cabinet

FAQ Получить премиум

Create a timeline

Public timelines

About & Feedback Соглашение Приватность FAQ

Cabinet Get premium

Donate

1 янв 1912 г. - Publishes a table of 25 different Cepheid variable periods.

Добавлено на ленту времени:

Henrietta Leavitt

ByShawn Cunning

2 окт 2018

0

0

499

Дата:

1 янв 1912 г.

Сейчас

~ 113 г назад

About & Feedback Соглашение Приватность FAQ

Cabinet Get premium

Donate

The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.

Secured with SSL