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Is dark matter made of mysterious 'ghost particles?' Galaxy clusters could hold the answer

"WIMPs are still the leading candidate for dark matter, but billions of dollars of experiments have been done, only getting ...

Does Earth have a temporary second moon? What astronomers actually discovered

Astronomers discovered a "quasi-satellite" of Earth, also known as a "quasi-moon," dubbed 2025 PN7 in 2025. NASA told Snopes ...