Earth may have been ravaged by “invisible” explosions from space

ScienceDaily
Dec 19, 2025, 6:30 am246 pts
Cosmic “touchdown airbursts” — explosions of comets or asteroids above Earth’s surface — may be far more common and destructive than previously thought, according to new research. Unlike crater-forming impacts, these events unleash extreme heat and pressure without leaving obvious scars, making them…

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