Scientists have captured the first clear image of a rare double-detonation supernova, where a white dwarf star is destroyed by two rapid explosions, producing key elements such as calcium and iron.
A supernova is a powerful explosion of a star, usually caused by the collapse of a massive star’s core. A rarer type, called a double-detonation supernova, involves a white dwarf star and two quick explosions.
Using the Very Large Telescope in Chile, researchers captured images of this event for the first time.
The star, about the size of our sun, exploded roughly 300 years ago in a nearby galaxy. The image shows two expanding shells of calcium, evidence of the double explosions.
This supernova type happens when a white dwarf pulls helium from a nearby star. The helium ignites on its surface, triggering a shockwave that causes the star’s core to explode moments later. Unlike typical supernovae, the white dwarf is completely destroyed, leaving no remnants.
Scientists say these explosions create heavy elements such as calcium, sulfur, and iron, which are essential for forming planets and life. The discovery helps explain how these elements spread across galaxies after a star dies.
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