Double strike: a pair of black holes ready to merge discovered in the Markarian 501 galaxy
Astronomers have confirmed that the Markarian 501 galaxy contains not one, but a pair of supermassive black holes. Gravitational lensing and jet analysis have proven the existence of a binary system that will merge in less than 100 years, creating the most powerful gravitational waves 🌌🕳️🔭
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