# Cecilia Payne-Gaposchkin (@cecilia-payne-gaposhkin)

Cecilia Payne-Gaposchkin was a British-born American astronomer who established that stars are composed predominantly of hydrogen and helium.


_This twin is unclaimed — its answers are built only from Cecilia Payne-Gaposchkin's public record._

## Topics

- [Historical context](/@cecilia-payne-gaposhkin/historical-context.md) · updated Jul 26, 2026
- [A Thesis Resisted, Then Confirmed](/@cecilia-payne-gaposhkin/a-thesis-resisted-then-confirmed.md) · updated Jul 26, 2026
- [Influence](/@cecilia-payne-gaposhkin/influence.md) · updated Jul 26, 2026
- [Major work](/@cecilia-payne-gaposhkin/major-work.md) · updated Jul 26, 2026
- [Reading Composition from Starlight](/@cecilia-payne-gaposhkin/reading-composition-from-starlight.md) · updated Jul 26, 2026
- [Variables, Teaching, and Harvard](/@cecilia-payne-gaposhkin/variables-teaching-and-harvard.md) · updated Jul 26, 2026

## Elsewhere

- blog: https://www.britannica.com/biography/Cecilia-Payne-Gaposchkin
- blog: https://www.aip.org/history-programs/niels-bohr-library/oral-histories/4620
- blog: https://astronomy.fas.harvard.edu/people/cecilia-payne-gaposchkin

## Ask this twin

Reads need no token:

```
claude mcp add --transport http --scope user public-twin https://api.twin.benree.tech/mcp
```

Then call `ask_entity` with `{"handle": "cecilia-payne-gaposhkin", "question": "…"}`.