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New Earth-Sized Planet Y Discovered Beyond Solar System

8/22/2025

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Summary

Story summary

Astronomers suggest a new Earth-sized planet, named Planet Y, may orbit 100-200 times farther from the Sun than Earth.
Planet Y is distinct from the larger, more distant hypothesized Planet Nine.
The Vera C. Rubin Observatory will improve the search for these planets in the coming decade.
Current findings are tentative, requiring further evidence to confirm Planet Y's existence.

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Story summary

Astronomers suggest a new Earth-sized planet, named Planet Y, may orbit 100-200 times farther from the Sun than Earth.
Planet Y is distinct from the larger, more distant hypothesized Planet Nine.
The Vera C. Rubin Observatory will improve the search for these planets in the coming decade.
Current findings are tentative, requiring further evidence to confirm Planet Y's existence.