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Ancient Star Discovery Challenges Stellar Aging Theories

5/7/2025

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Summary

Story summary

Astronomers at the University of Hawai‘i have made a groundbreaking discovery using the Keck Planet Finder, uncovering that star HD 219134 is a staggering 10.2 billion years old—over twice the age of our Sun. This revelation not only challenges current theories of stellar aging but also sheds light on the evolution of low-mass stars and their planetary systems.

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Story summary

Astronomers at the University of Hawai‘i have made a groundbreaking discovery using the Keck Planet Finder, uncovering that star HD 219134 is a staggering 10.2 billion years old—over twice the age of our Sun. This revelation not only challenges current theories of stellar aging but also sheds light on the evolution of low-mass stars and their planetary systems.