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VSFB SLC-4E Launches NASA's TRACERS Mission July 29, 2025 July 23, 2025 - Two NASA Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) launch aboard a SpaceX Falcon 9 rocket from Space Launch Complex 4E (SLC-4E) at Vandenberg Space Force Base (VSFB). The NASA’s TRACERS mission involves two satellites in low Earth orbit to study magnetic reconnection. These satellites will pass through the polar cusps regions, where solar particles funnel into the atmosphere, to gather data on how magnetic field lines break and reconnect, a key process in space weather. Image created by USA Patriotism! from U.S. Space Force photo by Senior Airman Kevin Hernandez. U.S. Space Force | U.S. Department of Defense | NASA | SpaceX Americans | I Am An American! | We The People | America's Destiny | Give Thanks | Love and Pride of USA | National Will God and Country | One Nation Under God | America's Symbol | Old Glory | Hooray USA! | America, My Home! Our Valiant Troops | I Am The One | Answering The Call | Brave Young | Brave Blue | Our Heroes, America's Best Veterans | Citizens Like Us | Vietnam War Veterans | Spouses Serve Too Honoring The Fallen | Don't Weep For Me | Remember The Fallen | Tears For Your Fallen | Our Wounded |