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Earth's surface temperature will reach around 420 K (147 °C; 296 °F), even at the poles. [80] [96] 2.8 billion High estimate until all remaining Earth life goes extinct. [80] [96] 3–4 billion The Earth's core freezes if the inner core continues to grow in size, based on its current growth rate of 1 mm (0.039 in) in diameter per year.
Earth will interact tidally with the Sun's outer atmosphere, which would decrease Earth's orbital radius. Drag from the chromosphere of the Sun would reduce Earth's orbit. These effects will counterbalance the impact of mass loss by the Sun, and the Sun will likely engulf Earth in about 7.59 billion years from now. [17]
The Earth is destroyed by the Sun at "high noon", though animals and plants come to an end by 5:00 am, meaning that the time that Earth can remain habitable to animals is very short, lasting only just 1 billion years, with the present day being the halfway point through that relatively short time.
However, as the Sun grows gradually hotter (over millions of years), Earth may become too hot for life as early as one billion years from now. [213] [214] [215] 1.3 billion Various It is estimated that all eukaryotic life will die out due to carbon dioxide starvation. Only prokaryotes will remain. [212] 7.59 billion David Powell
A new study is shedding light on how and why Neanderthals died out. The predecessor to humans today, Homo sapiens, vanished about 42,000 years ago.
A powerful solar flare, solar superstorm or a solar micronova, which is a drastic and unusual decrease or increase in the Sun's power output, could have severe consequences for life on Earth. [145] [146] Conjectured illustration of the scorched Earth after the Sun has entered the red giant phase, about seven billion years from now [147]
Then, Earth would be devastated by a series of magnitude 9.8 earthquakes, Earth's magnetic pole would shift by 30 degrees, the United States would be split in half, and Barack Obama would be elected president for an unconstitutional third term. [46] He predicted that the seven-year Great Tribulation would begin on October 15. [47]
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