00:00The cosmic crash that saved Earth. The story of Theia. Theia, the vibrant world we know, was an inhospitable desert in its origins.
00:10Revolutionary research at the University of Byrne has rewritten the chronology of our planet's birth.
00:16The proterid, the precursor to our home.
00:19Formed at a surprisingly fast speed, completing its chemical composition in just three million years after the solar system's birth.
00:28To achieve this precision, scientists used a high precision dating system based on the radioactive decay of manganese 53 to chromium 53,
00:37which allowed them to determine ages with an accuracy of less than one million years.
00:43But this rapidly formed Earth was not ready for life. Its material originated from the inner region of the solar system, close to the sun.
00:51Their intense heat prevented the essential elements for life such as water, carbon, and hydrogen from condensing.
00:58The result was a dry, rocky planet, lacking the volatile substances that allow for existence.
01:05The emergence of life was, initially, impossible.
01:09The fact that we are here today can only mean one thing.
01:13A cosmic event radically changed our planet's chemistry.
01:17The results of this study strongly support an old theory.
01:21The decisive intervention of a monumental collision with another.
01:25Planetary body named they.
01:27Scientists believe they formed much farther out.
01:31In cooler regions of the solar system, which allowed it to accumulate a large amount of volatile substances, including water.
01:39The subsequent impact of Theia not only contributed to the formation of the moon, but also acted as a cosmic delivery system.
01:47Inoculating our planet with the chemical cocktail necessary for life.
01:51In essence, Earth's habitability was not the result of continuous, predictable development, but rather a lucky event.
01:59The late impact of a water-rich body.
02:02This discovery underscores a fundamental lesson.
02:05Habitability in the universe is anything but a given.
02:09Science is now focused on modeling this crash event to fully.
02:13Unravel both the physical properties of the Earth and the moon.
02:17And the chemical and isotopic signatures the impact left behind.
02:22The quest to understand the miracle of our existence continues.
02:26I'm Explaners.
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