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Star Dies Twice
July 9 , 2025
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- The European Southern Observatory (ESO) finds the first visual proof of a double detonation in a white dwarf star.
- The supernova remnant SNR 0509-67.5 is located over 160,000 light-years away.
- This observation was made by using the Very Large Telescope (VLT) and Multi Unit Spectroscopic Explorer (MUSE).
- The Scientists confirm the star exploded twice, not once, making it a rare cosmic event.
- The very early belief was that white dwarfs explode only after crossing the Chandrasekhar limit (1.4 times the Sun’s mass).
- The white dwarf stole helium from a nearby star, causing a first outer explosion.
- The first blast sent a shockwave inward, igniting the core and causing a second explosion.
- Type I-a supernova confirmed through data from the Hubble Space Telescope.
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