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Did Life on Earth Come From the Cosmos?

We usually assume life began on Earth — but what if that assumption is wrong? In this video, we explore panspermia, the scientific hypothesis that life — or the building blocks of life — may have originated in space and arrived on Earth long ago. Blending astrobiology, chemistry, and cosmic history, we examine: • What panspermia actually proposes (and what it doesn’t) • Organic molecules found in meteorites and comets • How life’s building blocks can form in space • Whether microbes could survive interstellar travel • And what this theory means for life elsewhere in the universe