TED-Ed: Could comets be the source of life on Earth? - Justin Dowd

Comets have been seen as omens throughout history, but recent research suggests they may be crucial to the origin of life on Earth. The Solar System contains icy bodies beyond Neptune, some of which are pulled towards the Sun, forming comets. As they approach, they develop a coma and tail, reflecting sunlight. Comets may have delivered amino acids, the building blocks of life, to Earth. With many stars having Earth-like planets, comets could seed life elsewhere, suggesting a future where humanity explores its cosmic origins.

What historical beliefs were associated with comets?

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How do comets form a coma as they approach the Sun?

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What significant compounds were found in the rubble left by a meteorite and comet samples?

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In what way could comets be considered the ultimate source of life on Earth?

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What implications does the existence of Earth-like planets have for the origin of life in the universe?

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