Reply to post: Just imagine...

We don't usually sugar-coat the news but... Alien sugars found in Earth-bound meteorites

Steve Button

Just imagine...

... what would happen if a massive asteroid destroyed the earth and all life on it. Wouldn't we be left with some DNA and RNA amongst a bunch of much smaller asteroids, which could then go on to potentially seed life on other planets, billions of years in the future.

So, the real question in my mind is not "How did life start on earth", but "Does this point to life having existed somewhere else in this galaxy?" (albeit much simpler life, if they only had RNA and sugars, and no DNA). Or do we think that these things we're just spontaneously created by some chemical reaction? What's more likely?

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