These meteorites contain all of the building blocks of DNA

Three meteorites contain the molecular building blocks of DNA and its cousin RNA, scientists recently discovered. A subset of these building blocks had been detected in meteorites before, but the rest of the collection seemed mysteriously absent from space rocks – until now.

The new discovery supports the idea that, some four billion years ago, a barrage of meteorites may have delivered the molecular ingredients needed to jump-start the emergence of the earliest life on Earth, the researchers say.

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