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Earth and the Moon will be most likely be destroyed by falling into the Sun, just before the Sun reaches the largest of its red giant phase when it will be 256 times larger than it is now. Before the final collision, the Moon possibly spirals below Earth's Roche limit , breaking into a ring of debris, most of which falls to Earth's surface.
The Sun reaches the top of the red-giant branch of the Hertzsprung–Russell diagram, achieving its maximum radius of 256 times the present-day value. [118] In the process, Mercury, Venus and Earth are likely destroyed. [114] 8 billion The Sun becomes a carbon–oxygen white dwarf with about 54.05% of its present mass.
The ablation and vaporization caused by Earth's fall on a decaying trajectory towards the Sun may remove Earth's mantle, leaving just the core, which will finally be destroyed after at most 200 years. [102] [103] Earth's sole legacy will be a very slight increase (0.01%) of the solar metallicity following this event. [104]: IIC
The Doomsday clock was set at 89 seconds to midnight on Tuesday morning, putting it the closest the world has ever been to what scientists deem "global catastrophe."
The Doomsday Clock – which measures how close humanity is to destroying itself – will get its annual reset on Tuesday, January 28, 2025 at 10 am EST.
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.
The Earth will naturally become uninhabitable due to the Sun's stellar evolution, within about a billion years. [148] In around 1 billion years from now, the Sun 's brightness may increase as a result of a shortage of hydrogen , and the heating of its outer layers may cause the Earth's oceans to evaporate, leaving only minor forms of life. [ 149 ]
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]