Stars and solar physics Research update Astronomers observe a coronal mass ejection from a distant star 11 Dec 2025 Isabelle Dumé An artist’s impression of a large red star releasing a bright, explosive burst of light. Swirling red and orange patterns surround the star, suggesting intense activity. In the background, a smaller blue planet appears with a faint, wispy trail extending away from it, indicating its atmosphere being blown off. The scene is set against a dark space backdrop dotted with stars. Explosive: An artist’s impression of a coronal mass ejection from another star. (Courtesy: Olena Shmahalo/Callingham et al.) The Sun regularly produces energetic outbursts of electromagnetic radiation called solar flares. When these flares are accompanied by flows of plasma, they are known as coronal mass ejections (CMEs). Now, astronomers at the Netherlands Institute for Radio Astronomy (ASTRON) have spotted a similar event occurring on a star other than our Sun – the first unambiguous detection of a CME outside our solar system.

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