During a quieter interval between substorms in the major geomagnetic storm of November 11, 2025, a dock at Mark Twain Lake leads toward a green aurora in the distance. Destination 557 refers to the green oxygen emission line at 557.7 nanometers. Other auroral colors arise from different atmospheric gases and altitudes, with red also produced by oxygen and blue-violet tones associated with nitrogen.
During a quieter interval between substorms in the major geomagnetic storm of November 11, 2025, a dock at Mark Twain Lake leads toward a green aurora in the distance. Destination 557 refers to the green oxygen emission line at 557.7 nanometers. Other auroral colors arise from different atmospheric gases and altitudes, with red also produced by oxygen and blue-violet tones associated with nitrogen.
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