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Science Reveals Fate of Earth After Our Sun Dies

JWST detected a transit spectrum unlike any seen before and measured a temperature of 126 degrees Celsius, far above the -113 degrees researchers expected.

  • Using the James Webb Space Telescope, astronomers recently observed the Jupiter-sized exoplanet WD 1856 b orbiting a dead white dwarf star about 80 light-years from Earth, finding it "significantly warmer" than expected.
  • Study lead author Ryan MacDonald from the University of St Andrews explained the heat suggests the planet migrated inward after its host star died 5.4 billion years ago.
  • Data indicates the planet's temperature hovers around 126 degrees Celsius , which is about 240 degrees hotter than expected. This heat reveals the planet likely migrated to its current tight orbit.
  • MacDonald described the observation as "like using a time machine" to peer into the future of our Solar System. The transit provided the first atmospheric data for a planet orbiting a dead star.
  • "Ultimately, the dream would be to find a rocky planet orbiting a white dwarf," MacDonald said. Researchers hope to continue exploring these systems to search for life around dead stars.
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InsideNoVA.comInsideNoVA.com
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Science reveals fate of Earth after our sun dies

A new study gives fresh insight into what happens to planets after the death of their star.

Lean Left

It's called WD1856b, it's 80 light years away and could theoretically accommodate life despite the death of its star.

·Turin, Italy
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Science Alert broke the news in Australia on Wednesday, July 1, 2026.
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