Artist’s impression of a dying sun-like star engulfing an exoplanet. (Image credit: International Gemini Observatory/NOIRLab/NSF/AURA/M. Garlick/M. Zamani) In around 5 billion years, the sun will run out of the fuel needed for nuclear fusion in its core. This will cause its inner core to collapse under the force of […]
‘Singing’ red giant stars could offer another way to measure the universe’s expansion
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