TRACERS – Spaceflight Now

NASA probes to study how the solar wind triggers potentially dangerous ‘space weather’

July 23, 2025 William Harwood

SpaceX launched twin satellites for NASA Wednesday that will study how the electrically-charged solar wind interacts with Earth’s magnetic field, creating constantly changing and occasionally dangerous “space weather” affecting satellites, electrical grids and other critical systems.

FAA: ‘Regional power outage’ causes last-minute scrub of NASA’s TRACERS mission

July 22, 2025 Will Robinson-Smith

A total of 11 spacecraft will be deployed beginning about 1.5 hours after liftoff. SpaceX is aiming to launch the mission from pad 4 East at Vandenberg Space Force Base on July 23 at 11:13 a.m. PDT (2:13 p.m. EDT, 1813 UTC).

NASA selects missions to observe the sun and its impact on Earth

June 26, 2019 Stephen Clark

NASA has selected two satellite missions for launch on the same rocket in 2022 to investigate the origins of the solar wind and explore the interaction between magnetic fields around Earth with those from the sun.