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James Webb Reveals WASP-121b's Tumultuous Origins

6/3/2025

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Summary

Story summary

Astronomers have made a groundbreaking discovery with the James Webb Space Telescope, uncovering that the scorching exoplanet WASP-121b likely originated in the outer solar system before moving closer to its star. Its atmosphere, rich in carbon, oxygen, and silicon, suggests a tumultuous history of gas accumulation and rocky impacts, reshaping our understanding of how giant planets come to be.

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Story summary

Astronomers have made a groundbreaking discovery with the James Webb Space Telescope, uncovering that the scorching exoplanet WASP-121b likely originated in the outer solar system before moving closer to its star. Its atmosphere, rich in carbon, oxygen, and silicon, suggests a tumultuous history of gas accumulation and rocky impacts, reshaping our understanding of how giant planets come to be.