In some galaxies, matter falling onto a supermassive black hole is ejected in narrow jets moving at close to the speed of light. New observations provide insight into the workings of these cosmic accelerators.
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Young, A. Cosmic jet engines. Nature 463, 886–887 (2010). https://doi.org/10.1038/463886a
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DOI: https://doi.org/10.1038/463886a