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Study Reveals Black Holes Can Be Ejected at High Speeds

9/30/2025

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Summary

Story summary

A Nature Astronomy study shows black hole mergers can kick the remnant at thousands of kilometers per second (km/s), potentially ejecting it from a globular cluster.
The 2019 event involved two black holes with different masses, about 2.4 billion light-years away.
Future work may look for electromagnetic flares to confirm trajectories and reassess early-universe black hole masses.

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Story summary

A Nature Astronomy study shows black hole mergers can kick the remnant at thousands of kilometers per second (km/s), potentially ejecting it from a globular cluster.
The 2019 event involved two black holes with different masses, about 2.4 billion light-years away.
Future work may look for electromagnetic flares to confirm trajectories and reassess early-universe black hole masses.