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Triplet of 'ghostly' galaxies offers clues about dark matter

Original: Triplet of 'ghostly' galaxies hints at what dark matter is and isn't

Astronomers have identified a triplet of faint, 'ghostly' galaxies whose properties are being used to narrow down what dark matter might be — and rule out some possibilities. By studying how these dim, dark-matter-dominated systems behave, researchers hope to constrain the particle physics behind the universe's missing mass. The findings are drawing attention among science readers interested in cosmology and the ongoing hunt to explain the invisible matter that outweighs ordinary atoms.

Why now: New research linking faint galaxies to constraints on the nature of dark matter is fresh and scientifically significant.

Quanta Magazineghostly galaxiesdark matter

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• Triplet of 'ghostly' galaxies hints at what dark matter is and isn't · gumby · 105

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