NASA Supercomputer Predicts When Earth Will Become Uninhabitable, Ending Life As We Know It

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00:00NASA supercomputer predicts when Earth will become uninhabitable, ending life as we know

00:05it.

00:06A study by NASA and Toho University scientists used a supercomputer to estimate when Earth

00:11will become uninhabitable.

00:14Predictions about doomsday have often been speculative or wrong.

00:17Yet advanced simulations allow better timeline assessments.

00:21Although the Sun might endure 5 billion more years, changes will end Earth's habitability

00:26earlier.

00:27For years, Earth's biosphere's lifespan was linked to the Sun's steady brightening,

00:32stated Kazumi Ozaki, lead author of the study.

00:36That brightening will, over time, lead to more and more solar radiation reaching Earth.

00:41That radiation will, in turn, create shifts in Earth's climate that will make it no longer

00:46possible to support life.

00:48By 1 billion 2021, Earth will become so hot that oceans will evaporate, the atmosphere

00:54will thin, and oxygen levels will drop drastically.

00:58Essential resources will disappear, leading to conditions where life cannot exist, according

01:03to supercomputer simulations conducted by the scientists in this study.

01:08Of course, depending on how humans behave, that number could be reduced or increased.

01:13As Daily Galaxy explains, with the ongoing effects of human-driven climate change, including

01:18deforestation, pollution, and rising fossil fuel consumption, oxygen levels are expected

01:24to decline even sooner.

01:26These atmospheric changes, in combination with the Sun's gradual brightening, will lead

01:30to a scenario where only the hardiest organisms, like certain types of bacteria, might be able

01:36to survive.

01:37Back in 2021, Dr. Mark Morris, a professor of astronomy at UCLA, also stated that the end

01:43of the world as we know it has a very good chance of being caused by the Sun, but with a slightly

01:48different twist.

01:49There's every expectation that in about 5 billion more years that our Sun will swell up to become

01:55a red giant, Morris explained.

01:58And then, as it gets larger and larger, it will eventually become what's called an asymptotic

02:04giant branch star, a star whose radius is just under the distance between the Sun and

02:08the Earth, one astronomical unit in size, so the Earth will be literally skimming the surface

02:13of the red giant Sun when it's an asymptotic giant branch star.