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A million-sun-mass mystery object found lurking in deep space

Scientists using a global array of radio telescopes have detected the universe’s lowest-mass dark object by observing how it warped light through gravitational lensing. The invisible mass, about a million times the Sun’s weight, could be a small clump of dark matter or a dormant dwarf galaxy. The finding supports cold dark matter models and opens the door to uncovering more hidden objects shaping the cosmos.

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