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Astronomers Capture First Direct Image of Double-Detonation Supernova Remnant

LARGE MAGELLANIC CLOUD, JUL 3 – Astronomers used the Very Large Telescope to confirm a double-detonation in a white dwarf star, supporting theories on Type Ia supernovae and their role in cosmic expansion.

  • 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.
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NDTV Gadgets 360 broke the news in on Tuesday, July 1, 2025.
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