NOAA’s New Space Weather Satellite SOLAR-1 Reaches Final Orbit One Million Miles From Earth

A major milestone in space weather monitoring was reached this week as NOAA’s Space Weather Follow On-Lagrange 1 (SWFO-L1) observatory successfully executed its final engine burn and entered its intended orbit at the Sun-Earth Lagrange point 1, roughly one million miles from Earth. At this unique vantage point, the satellite will be able to continuously […]

A major milestone in space weather monitoring was reached this week as NOAA’s Space Weather Follow On-Lagrange 1 (SWFO-L1) observatory successfully executed its final engine burn and entered its intended orbit at the Sun-Earth Lagrange point 1, roughly one million miles from Earth. At this unique vantage point, the satellite will be able to continuously observe the sun and space weather conditions before they reach our planet.

With its arrival at this critical location on January 23, the observatory has officially been renamed Space weather Observations at L1 to Advance Readiness – 1 (SOLAR-1). This marks a significant step forward in operational space weather forecasting for NOAA.

Greg Marlow, Director of NOAA’s Office of Space Weather Observations, highlighted the importance of the mission, saying, “SOLAR-1, America’s first satellite designed exclusively for continuous, operational space weather observations, represents a major advancement in our defense against solar storms.”

SOLAR-1 will provide state-of-the-art data to forecasters and other users, improving the timeliness and accuracy of space weather forecasts, warnings and alerts. Richard Ullman, Deputy Director of NOAA’s Office of Space Weather Observations, emphasized that the data will help protect critical missions and infrastructure, including support for NASA’s Artemis lunar exploration program.

“This spacecraft is going to be an impressive new tool… because space weather is a global concern,” said Shawn Dahl, Service Coordinator at NOAA’s Space Weather Prediction Center. Dahl noted that space weather events can have wide-ranging impacts, from affecting critical systems on Earth to space-based infrastructure.

SOLAR-1 will undergo additional checkout and instrument validation before beginning operational service in Spring 2026. Once fully commissioned, the observatory is expected to deliver continuous real-time observations of the solar wind and other space weather phenomena that can disrupt communications, navigation systems and power infrastructure here on Earth.

The satellite was launched on September 24, 2025, aboard a SpaceX Falcon 9 rocket from NASA’s Kennedy Space Center in Florida, marking the start of its journey to its final orbit.