Sun news: Triplet of space weather missions launch tomorrow

['C. Alex Young', 'Posted By', 'View Articles', '.Wp-Block-Co-Authors-Plus-Coauthors.Is-Layout-Flow', 'Class', 'Wp-Block-Co-Authors-Plus', 'Display Inline', '.Wp-Block-Co-Authors-Plus-Avatar', 'Where Img', 'Height Auto Max-Width'] EarthSky 2025-09-23 10:15:53

Unsettled-to-active conditions expected, with isolated G1 (minor) storms likely and a slight chance of G2 (moderate) storms from a corotating interaction region (CIR) impact. Solar wind: The solar wind stayed slow, below 300 km/s. The solar wind stayed slow, below 300 km/s. Forecasts call for unsettled-to-active conditions, with isolated G1 (minor) storms possible today as the fast solar wind arrives. Bottom line: Sun news September 23, 2025: NASA will launch 3 missions tomorrow to study the sun and its influence on the solar system.