Space Weather Watch: Keeping Artemis 2 Crew Safe

NASA’s Artemis 2 will carry four astronauts past Earth’s magnetic shield toward the Moon. The launch is slated for April 1, making it the first crewed trip beyond that distance since Apollo 17 in 1972. Because Earth’s field normally blocks solar radiation, the crew faces new risks from solar flares, coronal mass ejections (CMEs), and cosmic rays that can reach deep into space. To guard against these hazards, NOAA’s Space Weather Prediction Center (SWPC) and NASA are teaming up. SWPC will station forecasters at Johnson Space Center to provide real‑time guidance, while the main team in Boulder will issue final decisions. The forecasters will stay connected with their base and relay any solar energetic proton events (SPEs) immediately. Although the Sun is in a high‑activity phase, activity may be declining; nevertheless, past storms after solar maximum show that serious events can still occur.A joint exercise in April and May 2025 brought together more than 70 participants from NASA, the Air Force, commercial firms and academia. The drill simulated a radiation storm to test communication and modeling tools that will be used during Artemis 2. NASA’s space‑weather director, Jamie Favors, says confidence is high because multiple models will run in parallel, much like hurricane forecasts. The combined teams—NOAA SWPC, NASA’s Space Radiation & Analyses Group (SRAG), and the Moon‑to‑Mars Office—will monitor conditions 24 hours a day, using data from satellites and ground stations to keep the crew informed. The focus is on collecting as much data as possible; better data means more accurate warnings and safer missions. As Artemis 2 prepares to launch, these efforts illustrate how space‑weather science is becoming a key part of human exploration.