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Study Confirms Newton's Gravity Law, Supports Dark Matter Theory

4/16/2026

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Summary

Story summary

A study in Physical Review Letters confirms gravity follows Newton's inverse-square law across vast cosmic distances.
Researchers from the University of Pennsylvania used Atacama Cosmology Telescope data to analyze galaxy clusters.
Their findings attribute velocity discrepancies to dark matter, not modified gravity.
The results strengthen the case for dark matter and future observations may refine these measurements.

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Story summary

A study in Physical Review Letters confirms gravity follows Newton's inverse-square law across vast cosmic distances.
Researchers from the University of Pennsylvania used Atacama Cosmology Telescope data to analyze galaxy clusters.
Their findings attribute velocity discrepancies to dark matter, not modified gravity.
The results strengthen the case for dark matter and future observations may refine these measurements.