New camera for Sweden’s premier radio telescope enables unique multicolor images of black holes in global project
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Updates every hour. Last Updated: 4-Dec-2025 14:11 ET (4-Dec-2025 19:11 GMT/UTC)
A strong geomagnetic storm in spring 2024 brought the northern lights unusually far south, as the auroral oval expanded well beyond its typical position. "I am surprised at how sparse the measurement network is, even though we know that the impacts of space weather can vary greatly from one area to another," says Doctoral Researcher Otto Kärhä from the University of Oulu, Finland.