What Would Happen if the Sun Stopped? Part 1: The Infernal Reservoir

June 15, 2026 Universe Today

What Would Happen if the Sun Stopped? Part 1: The Infernal Reservoir
By Paul Sutter (https://ift.tt/l7t5Hhj)

The Sun imaged by NASA's Solar Dynamics Observatory. Beneath all that brilliance, fusion is astonishingly inefficient. Credit: NASA/SDO (public domain).

If the Sun's fusion shut off right now, you would not notice for a very long time. The first stop is understanding the Sun itself: a vast pile of gravitating matter where fusion is so absurdly inefficient that, pound for pound, a compost heap beats it.

June 16, 2026 at 12:55AM
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