# REX

> instrument carried on the New Horizons science payload; passive radiometer that measures atmospheric composition and temperature

**Wikidata**: [Q60749459](https://www.wikidata.org/wiki/Q60749459)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/REX_(New_Horizons))  
**Source**: https://4ort.xyz/entity/rex-q60749459