<ul><li>Scientists have used advanced technology to set new limits on the lifetime of dark matter.</li><li>Dark matter is an invisible substance that makes up most of the mass in the universe.</li><li>Using a special spectrograph, the researchers observed two distant galaxies to look for decay signals.</li><li>The study suggests that if axion-like particles exist, they could last at least 10 to the power of 25 to 26 seconds.</li></ul>

Scientists set new limits on dark matter’s mysterious lifetime

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