The first stage of a Rocket Lab Electron rocket ignites at liftoff from Pad B, Launch Complex 1, in Māhia, New Zealand, at 11:46 p.m. EDT on Thursday, May 25 (3:46 p.m. NZST Friday, May 26) carrying the final pair of NASA’s Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) CubeSats secured in the payload fairing atop the rocket. The successful launch placed the final pair of TROPICS CubeSats into orbit, completing the constellation. TROPICS will provide data on temperature, precipitation, water vapor, and clouds by measuring microwave frequencies, providing insight into storm formation and intensification.