Yhn SciencePhysics first seen 23 h ago, last 44 min ago, peak #4

Ghostly galaxy triplet 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 unusual properties are providing new hints about the nature of dark matter. The findings, reported by Quanta Magazine, suggest what the mysterious substance may — and may not — be made of, as researchers use these dim systems to test competing dark matter models.

Why now: New research linking rare faint galaxies to constraints on dark matter theories is drawing scientific and public interest.

Quanta Magazinedark matterghostly galaxies

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• Triplet of 'ghostly' galaxies hints at what dark matter is and isn't · gumby · 102

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