astronomers has uncovered a third galaxy devoid of dark matter, challenging conventional wisdom about the invisible substance that is believed to hold galaxies together. Published in a new study ...

The moon did indeed coalesce out of tiny bits of pulverized planet blasted into space by a catastrophic collision 4.5 billion years ago, two new studies suggest. The new research potentially plugs a ...

Dark matter, the invisible matter that holds the galaxies together, is entirely missing in a galaxy, a new study has shown. The study, led by Michael Keim and Pieter van Dokkum at Yale University, has ...

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