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New Discovery of Low-Mass Dark Object Challenges Dark Matter Theories

10/10/2025

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Summary

Story summary

Astronomers detect lowest-mass dark object, about one million solar masses, nearly 10 billion light-years away, via gravitational lensing.
Data from the Green Bank Telescope (GBT) and the Very Long Baseline Array (VLBA) were analyzed with advanced techniques.
Finding published October 9, 2025 could challenge dark matter theories while supporting cold dark matter; researchers plan to find objects to understand galaxy formation.

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Story summary

Astronomers detect lowest-mass dark object, about one million solar masses, nearly 10 billion light-years away, via gravitational lensing.
Data from the Green Bank Telescope (GBT) and the Very Long Baseline Array (VLBA) were analyzed with advanced techniques.
Finding published October 9, 2025 could challenge dark matter theories while supporting cold dark matter; researchers plan to find objects to understand galaxy formation.