NASA's PUNCH Mission Can Now Accurately Predict When Solar Storms Will Hit Earth
NASA's PUNCH mission, consisting of four microsatellites, has demonstrated a significant improvement in predicting the arrival of solar storms on Earth. By tracking coronal mass ejections throughout their journey, the team achieved an accuracy within 30 minutes, far surpassing current methods.
Why it matters
Enhanced solar storm forecasting is critical for protecting global power grids, satellite communications, and radio infrastructure from geomagnetic interference.
It was accurate to within a half hour during initial tests.
NASA/PUNCH/SwRI In March 2025, NASA launched the Polarimeter to Unify the Corona and Heliosphere ( PUNCH ) mission in an effort to better understand solar weather. It consists of a constellation of four microsatellites, monitoring the sun 24/7. Those satellites started taking images of coronal mass ejections (CMEs), which are explosive expulsions of materials from the sun into space, as soon as they arrived in orbit. Now, the PUNCH team has taken those images and data to show how much the mission can improve solar storm forecasts.
The scientists used continuous imagery of a coronal mass ejection that the PUNCH satellites took on May 31, 2025 to see if they could improve forecast modeling for solar storms. A CME causes solar storm, which happens when the solar materials from the blast reach Earth's atmosphere and magnetic field.
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