Story perspectives

NASA's XRISM Discovers 2 Million MPH Winds in M82 Galaxy

4/2/2026

Summary

Story summary

NASA's XRISM spacecraft detected winds in the star-forming galaxy M82 traveling over 2 million miles per hour, challenging models.
The winds extend about 40,000 light-years from M82's core, where the core temperature reaches about 45 million degrees Fahrenheit.
Intense stellar activity drives outflows, and XRISM notes a mass-outflow discrepancy, with more gas moving outward than expected.
Researchers pursue ongoing investigations to refine starburst-galaxy models and deepen understanding of galactic processes.

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Story summary

NASA's XRISM spacecraft detected winds in the star-forming galaxy M82 traveling over 2 million miles per hour, challenging models.
The winds extend about 40,000 light-years from M82's core, where the core temperature reaches about 45 million degrees Fahrenheit.
Intense stellar activity drives outflows, and XRISM notes a mass-outflow discrepancy, with more gas moving outward than expected.
Researchers pursue ongoing investigations to refine starburst-galaxy models and deepen understanding of galactic processes.