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Today in History: Event Horizon Telescope Captures First Sagittarius A* Image

5/12/2026

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Summary

Story summary

On May 12, the Event Horizon Telescope unveiled the first image of Sagittarius A*, the Milky Way’s supermassive black hole. Using a global VLBI array, the network achieved horizon-scale resolution, confirming the black hole’s compact radio source and providing direct visual evidence of its event horizon.

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Story summary

On May 12, the Event Horizon Telescope unveiled the first image of Sagittarius A*, the Milky Way’s supermassive black hole. Using a global VLBI array, the network achieved horizon-scale resolution, confirming the black hole’s compact radio source and providing direct visual evidence of its event horizon.