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Washington, DC - Understanding the hazards of space weather on crewed and robotic missions is vital to informing plans for NASA’s Journey to Mars and other missions into our solar system, and beyond. Veteran NASA astronaut John Grunsfeld and solar experts will discuss that and more during a panel discussion at 1 p.m. EDT, Tuesday, October 25.

The event will air live on NASA Television and stream on the agency’s website.

The panel discussion will take place at the National Air and Space Museum’s Moving Beyond Earth gallery at 6th Street and Independence Avenue S.W. in Washington.

The event also will mark the 10th anniversary of the launch of NASA’s two Solar TErrestrial RElations Observatory (STEREO) spacecraft. The twin probes have advanced space weather forecasting more than any other spacecraft or solar observatory and enabled previously impossible early warnings of threatening conditions posed by the sun.

The discussion participants are:

Media interested in attending should contact Alison Mitchell at This email address is being protected from spambots. You need JavaScript enabled to view it. or 202-633-2376. Media may ask questions during the event in person and by phone. To participate by phone, media must email their name, media affiliation and phone number to Dwayne Brown at This email address is being protected from spambots. You need JavaScript enabled to view it. by noon October 25. The public also can ask questions on social media using #AskNASA