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A few years ago, an article in the Wall Street Journal reported the first case of observing an astronomical phenomenon predicting the end of the Earth in 5 billion years.
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The phenomenon is the end of a star's life as hydrogen, the raw material of the nuclear fusion reaction, reveals its bottom.
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The star swells up into a “red giant” and swallows the planet orbiting itself.
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Or, it contracts into a "white dwarf star" and tears the planet around it with strong gravity.
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It is because of the end of the sun in the constellation Virgo, 570 light years from our solar system.
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It is the death of a planet that is decomposed by the intense heat and gravity of this sun.
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This was observed by researchers at the Harvard-Smithsonian Astrophysics Center in the United States.
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The researchers' findings were also published in the issue of Nature. |