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If Earth is not ejected during a stellar encounter, then its orbit will decay via gravitational radiation until it collides with the Sun in 10 20 (100 quintillion) years. [109] If proton decay can occur and Earth is ejected to intergalactic space, then it will last around 10 38 (100 undecillion) years before evaporating into radiation. [110]
The Earth and Moon are very likely destroyed by falling into the Sun, just before the Sun reaches the top of its red giant phase. [112] [note 3] Before the final collision, the Moon possibly spirals below Earth's Roche limit, breaking into a ring of debris, most of which falls to the Earth's surface. [114]
The book discusses Earth's future and eventual demise as it is ultimately destroyed by a warming and expanding Sun.The Earth's lifespan is compared to that of a living being, pointing out that the systems which keep it habitable will gradually break down one by one, like the organs in an aging human body.
After the sun celebrates its 11 billionth birthday, scientists believe it will continue to expand to the point where it is 166 times bigger than it is now.
The first eon in Earth's history, the Hadean, begins with the Earth's formation and is followed by the Archean eon at 3.8 Ga. [2]: 145 The oldest rocks found on Earth date to about 4.0 Ga, and the oldest detrital zircon crystals in rocks to about 4.4 Ga, [34] [35] [36] soon after the formation of the Earth's crust and the Earth itself.
Two whale sharks at the Notojima Aquarium died nine days after the earthquake. Park officials said damaged equipment may have deteriorated living conditions inside the tank and contributed to their deaths. [315] [316] In total, around 5,000 creatures died in the aquarium following damage from the earthquake to its water circulation equipment ...
Known affectionately to scientists as the "boring billion," there was a seemingly endless period in the world's history when the length of a day stayed put. The time when a day on Earth was just ...
It took 4.5 billion years before humanity appeared on Earth, and life as we know it will see suitable conditions for 1 [94] to 2.3 [95] billion years more. Red dwarfs, by contrast, could live for trillions of years because their nuclear reactions are far slower than those of larger stars, meaning that life would have longer to evolve and survive.