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Space Weather

Solar flares, coronal mass ejections, solar particle events, and the solar wind form the recipe for space weather that affects life on Earth and astronauts in space.

A portion of the Sun, appears in red, yellow, orange, and black. A yellow burst of solar material juts off of the Sun, against the black expanse of space.

The Sun and Your Everyday Life

Though it is almost 100 million miles away from Earth, the Sun influences our daily lives in ways you may not realize.

A farmer stops their planting operations due to poor GPS signal for their autonomous tractor. A power grid manager changes the configuration of their network to ensure a blackout doesn’t occur due to voltage instability. A pilot switches to back-up communication equipment due to loss of high-frequency radio. A commercial internet company providing service to the military must change the orbit of their spacecraft to avoid a collision due to increased atmospheric drag.

These are a few examples of the ways the Sun influences our everyday lives. This is what we define as space weather – the conditions of the space environment driven by the Sun and it’s impacts on objects in the solar system.

NASA, through the Space Weather Program, studies the physical processes of space weather and it’s impacts in order to develop the understanding that enables successful prediction and applications.

The Space Weather Program also supports NASA’s robotic and human exploration at Earth, the Moon, Mars, and beyond.

On the left, farmer Dwane Roth of Kansas kneels in his field. On the right, an aircraft can be seen treating the field.
Space weather can cause disturbances to the communications and GPS systems that farmers rely on for precision planting and other crucial tasks.
NASA’s Goddard Space Flight Center

Science Enabling Space Weather Forecasting and Decision Making

A successful forecast or an improved decision is first built on scientific understanding, and this is where NASA supports user-driven space weather research and applications.

NASA implements the Space Weather Research-to-Operations-to-Research (R2O2R) Program Element on behalf of and in collaboration with NOAA, DoD, and NSF to accelerate targeted space weather research toward operational implementation.

R2O2R refers to the cyclical process by which basic and applied research activities (R), having been identified as having the potential for improving forecasting capabilities, are matured in a targeted way toward a formal operational implementation (O) and, once ”operationalized,” subsequent needs for refinements are conveyed back to the research community (R).

NASA’s Space Weather Instrument Pipeline is another pathway to host space weather instruments on commercial and other space-based platforms. To date, NASA has selected three instruments for the Pipeline and released two RFIs to gather community input to inform the future of the initiative.

Photo of a woman pointing at a large colorful screen display showing space weather visualiztions.

International Space Station, Artemis, and Mars

Protecting Astronauts and Assets in Space

Beyond Earth's protection, astronauts are exposed to the harsh environment of space.

Heliophysics Division missions and applied research support activities to keep astronauts and spacecraft situationally aware across the solar system to the potential threats of space weather.

NASA’s Moon to Mars Space Weather Prediction Office (M2M) conducts real-time space weather assessments to support the development and validation of new capabilities for understanding space weather impacts on NASA robotic and human exploration activities.

M2M collaborates with NOAA SWPC to support NASA Space Radiation Analysis Group (SRAG) during NASA human exploration missions like Artemis I in 2022.

Artemis II crew members, shown inside the Neil Armstrong Operations and Checkout Building at NASA’s Kennedy Space Center in Florida, stand in front of their Orion crew module on Aug. 8, 2023. From left are: Jeremy Hansen, mission specialist; Victor Glover, pilot; Reid Wiseman, commander; and Christina Hammock Koch, mission specialist. The crew module is undergoing acoustic testing ahead of integration with the European Service Module. Artemis II is the first crewed mission on NASA’s path to establishing a long-term lunar presence for science and exploration under Artemis.
NASA/Kim Shiflett

Space Weather Interagency Collaborations

Promoting Research and Observations of Space Weather to Improve Forecasting of Tomorrow

Improving the ability of the United States to forecast space weather events and mitigate the effects of space weather

Signed into law on October 21, 2020, by President Trump, the Promoting Research and Observations of Space Weather to Improve Forecasting of Tomorrow (PROSWIFT) Act directs a variety of government agencies, including NOAA, NASA, NSF, DOD, and the Department of the Interior, to coordinate in order to improve space weather forecasts and predictions and mitigate its impact.

More on the PROSWIFT Act
Signing of the Memorandum of Agreement for Space Weather Research-to-Operations-to-Research Collaboration, Eisenhower Executive Office Building, Washington, D.C., Dec. 7, 2023. Left to right: NASA Nicola Fox, Ph.D., NOAA Ken Graham, NOAA Stephen Volz, Ph.D., NSF Timothy Patten, Ph.D. (on behalf of Alexandra Isern, Ph.D.), DAF Major General Mark Slocum (on behalf of Lieutenant General James C. Slife), and DAF Dr. Joel Mozer (on behalf of Lisa Costa, Ph.D.). (Image credit:
Bob Hyatt, NOAA