Uranium ‘snowflakes’ could set off thermonuclear explosions of dead stars

White dwarfs could go supernova in response to nuclear fission caused by uranium crystals

remnant of a 1a supernova

Stellar explosions called type 1a supernovas (remnant of one shown) could sometimes be triggered by the buildup of uranium “snowflakes” in the cores of dead stars, a new study suggests.

MPIA, NASA, Calar Alto Observatory

Tiny crystals of uranium could set off massive explosions within a dead star, physicists propose, making for a cosmic version of a thermonuclear bomb.