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Sun's End: When Our Star Dies | Science News
The sun’s not eternal—eventually, it’ll blow up Earth’s cozy existence. In a billion years, it’ll grow brighter, boil oceans, then swell into a red giant, likely swallowing Mercury and roasting Earth. After helium fusion kicks in, it’ll puff up even more, shedding mass and flinging planets outward. Venus is doomed, Earth might survive but won’t be livable. By 12 billion years, the sun will die, fading into a cold black dwarf. While this timeline is billions of years away, it’s a cosmic reminder: even our closest star has an expiration date—and humanity’s future? Still wildly unpredictable…
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