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Physicists Forecast 33-Billion-Year Big Crunch, Earth Black-Hole Threat

4/30/2026

Summary

Story summary

Physicists Hoang Nhan Luu, Yu-Cheng Qiu, and S.-H. Henry Tye predict a “Big Crunch” 33.3 billion years after Big Bang that could turn Earth into a black hole.
Their Donostia International Physics Center pre-print argues dark energy may vary, allowing cosmic expansion to halt and reverse.
They say reversal would collapse galaxies, stars and planets toward a singularity, boost black-hole formation, shield the crunch, while data are needed to test it.

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Story summary

Physicists Hoang Nhan Luu, Yu-Cheng Qiu, and S.-H. Henry Tye predict a “Big Crunch” 33.3 billion years after Big Bang that could turn Earth into a black hole.
Their Donostia International Physics Center pre-print argues dark energy may vary, allowing cosmic expansion to halt and reverse.
They say reversal would collapse galaxies, stars and planets toward a singularity, boost black-hole formation, shield the crunch, while data are needed to test it.