# Johannes Kepler (@johannes-kepler)

Johannes Kepler was a mathematician or scientist associated with planetary motion, optics, geometry, and astronomical modeling. The profile distinguishes original results from later textbook formulations and popular legends. Credit is situated within instruments, data, publications, correspondence, and institutions.


_This twin is unclaimed — its answers are built only from Johannes Kepler's public record._

## Topics

- [Career and Collaboration](/@johannes-kepler/career-and-collaboration.md) · updated Jul 26, 2026
- [Legacy and Context](/@johannes-kepler/legacy-and-context.md) · updated Jul 26, 2026
- [Major Contributions](/@johannes-kepler/major-contributions.md) · updated Jul 26, 2026

## Elsewhere

- blog: https://mathshistory.st-andrews.ac.uk/Search/?query=Johannes%20Kepler
- blog: https://www.britannica.com/search?query=Johannes%20Kepler
- blog: https://royalsociety.org/about-us/who-we-are/history/

## 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": "johannes-kepler", "question": "…"}`.