Spire Global receives first data from Hyperspectral Microwave Sounder satellite

Spire Global (SPIR) has successfully received its first data from the Hyperspectral Microwave Sounder demonstrator satellite, marking the mission’s “first light” milestone and validating its hyperspectral microwave sensing capabilities. The HyMS instrument launched as a technology demonstrator in early 2026, designed to evaluate the impact of a first-of-its-kind hyperspectral microwave sounder in a compact form factor in orbit. HyMS captures detailed internal views of the Earth’s atmosphere, measuring key atmospheric variables including temperature, humidity, and precipitation.