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A black and white photograph of Henrietta Swan Leavitt. She is wearing a white blouse with a large lace collar that covers her shoulders, upper chest, and neck. Her hair is pulled up and she is looking directly at the camera. She has dark eyes in tis photo, strong eyebrows, and a long, thin nose.

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A black and white photograph of Henrietta Swan Leavitt. She is wearing a white blouse with a large lace collar that covers her shoulders, upper chest, and neck. Her hair is pulled up and she is looking directly at the camera. She has dark eyes in tis photo, strong eyebrows, and a long, thin nose.
https://files.mastodon.social/media_attachments/files/110/831/585/668/405/355/original/a9703e15cb0c4d6a.jpeg

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Robert McNees (mcnees@mastodon.social)'s status on Friday, 04-Aug-2023 23:15:45 JST Robert McNees

Astronomer Henrietta Swan Leavitt was born OTD in 1868.
She established the period-luminosity relation for Cepheid variable stars, an essential tool for understanding the scale of our Universe.
Image: Harvard-Smithsonian Center for Astrophysics

In conversation Friday, 04-Aug-2023 23:15:45 JST from mastodon.social permalink