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Massive Hydrogen Bridge Links Dwarf Galaxies Over 185,000 Light-Years

9/26/2025

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Summary

Story summary

A hydrogen bridge connects dwarf galaxies NGC 4532 and DDO 137, spanning 185,000 light-years.
A gas tail extends 1.6 million light-years, the longest observed.
The galaxies fall into the Virgo Cluster at 547 miles per second, with ram pressure and tidal forces shaping the gas dynamics.
Findings rely on high-resolution observations of neutral hydrogen.

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Story summary

A hydrogen bridge connects dwarf galaxies NGC 4532 and DDO 137, spanning 185,000 light-years.
A gas tail extends 1.6 million light-years, the longest observed.
The galaxies fall into the Virgo Cluster at 547 miles per second, with ram pressure and tidal forces shaping the gas dynamics.
Findings rely on high-resolution observations of neutral hydrogen.