A recent study has revealed the existence of an enormous structure in our Milky Way galaxy, extending over hundreds of thousands of light-years. This structure, known as the “radial-velocity filament,” was discovered by an international team of researchers who used data from Gaia, a spacecraft launched by the European Space Agency. The filament is twice as long as our galactic disk and is composed of stars that are moving in a single direction along the filament. This phenomenon, which has never been seen before, could provide scientists with important insights into the formation and evolution of our Milky Way.

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source: Phys.org