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Researchers gazing into the center of the Milky Way with one of the world's largest radio telescope arrays have discovered thousands of mysterious strand-like structures never seen before.
These structures, known as radio filaments, jut out of the galactic center in long, thin tendrils — some of which stretch up to 150 light-years long, or nearly 40 times the distance between Earth and the nearest next-door star system, Proxima Centauri.
Some filaments come in pairs, others in equally-spaced sets like the strings of a harp. All of them bristle with energy, likely generated by billions of electrons bouncing through a magnetic field at near-light-speed, according to two forthcoming studies accepted to The Astrophysical Journal and The Astrophysical Journal Letters.
https://www.livescience.com/radio-filaments-milky-way-center