US EditionAstronomers Capture First Direct Image of Double-Detonation Supernova Remnant
- In July 2025, astronomers published in Nature Astronomy the first visual evidence of a double-detonation supernova in the supernova remnant SNR 0509-67.5 in the Large Magellanic Cloud.
- Scientists discovered the first visual evidence of a double-detonation supernova in SNR 0509-67.5, confirming long-standing suspicions due to the predicted calcium fingerprint.
- Using ESO’s VLT MUSE instrument, scientists identified two concentric calcium rings in supernova remnant SNR 0509-67.5, confirming a double explosion, as published in Nature Astronomy.
- This discovery shows white dwarfs can explode early, refining Type Ia supernova use for measuring universe expansion.
- In future models, this discovery may revise stellar evolution theories and help resolve the Hubble constant tension impacting cosmological measurements.
80 Articles
80 Articles
A Star Detonated as a Supernova... Twice
The beautiful supernova remnant looks a little different from other examples of stars that detonated in the past. And it should, because according to astronomers, the star that met its end exploded twice. It was a white dwarf in its former life, pulling material from a binary companion, creating the perfect conditions for a Type 1a supernova. It accumulated a blanket of helium, which exploded first, triggering a second detonation at the core of …
Science Daily
WDC TV NewsA star exploded twice — First-ever image reveals its cosmic fingerprint
Astronomers studying the remnant SNR 0509-67.5 have finally caught a white dwarf in the act of a rare “double-detonation” supernova, where an initial helium blast on the star’s surface triggers a second, core-shattering explosion.
This is a first visual proof of this theoretical scenario.
ABC FOX Montana
Fantastic first picture ever of a star that exploded twice
It is the first time researchers have obtained visual evidence that a star met its end via double detonation.
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