Particle.news
Download on the App Store

Rocket Lab Launches ESA’s First Celeste Satellites To Test LEO Navigation Layer

The mission aims to strengthen Galileo by proving a low‑orbit add‑on that uses new L‑ and S‑band signals.

Overview

  • Rocket Lab’s Electron placed two ESA Celeste satellites into low Earth orbit from New Zealand, and the pair began early operations after separating about an hour post‑launch.
  • ESA says the spacecraft will validate core technologies and bring into use L‑ and S‑band signals under International Telecommunication Union rules.
  • Celeste is designed to complement Europe’s Galileo and EGNOS services by adding a closer‑to‑Earth layer that can improve signal strength in cities, polar regions, and some indoor settings.
  • The two satellites were built by European teams led by GMV with OHB and by Thales Alenia Space, drawing on a network of more than 50 partners across over 14 countries.
  • ESA plans follow‑on launches in 2027 to expand the demonstrator to 11 satellites and to prepare for a potential operational low‑orbit navigation service.