# Ronald McNair (@ronald-mcnair)

Ronald McNair was a physicist and astronaut who became the second Black American in space.


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

## Topics

- [Challenger](/@ronald-mcnair/challenger.md) · updated Jul 26, 2026
- [Laser physics](/@ronald-mcnair/laser-physics.md) · updated Jul 26, 2026
- [STS-41-B](/@ronald-mcnair/sts-41b.md) · updated Jul 26, 2026

## Elsewhere

- blog: https://www.nasa.gov/former-astronaut-ronald-e-mcnair/
- blog: https://physics.mit.edu/about-physics/our-history/ronald-mcnair/
- blog: https://www.nasa.gov/challenger-sts-51l-accident/

## 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": "ronald-mcnair", "question": "…"}`.