HomeAstronomyMeteorites and volcanoes may have helped jump-start life on Earth

Meteorites and volcanoes may have helped jump-start life on Earth

Iron particles, from meteorites or volcanic ash, could have catalyzed the chemical reactions that formed the building blocks of life over four billion years ago on Earth, a new study suggests.

The oldest fossil evidence for life on Earth is estimated to be between 3.75 and 4.28 billion years old, but nobody really knows how or when life got a foothold on our planet. One way of working toward an answer is to identify how the vital chemical building blocks for life — organic compounds that assemble into amino acids, proteins and eventually RNA and DNA strands — first formed.

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