In what appears to be seriously big news from a team of NASA-funded researchers, scientists have found evidence that some building blocks of DNA--including two of the four nucleobases that make up our genetic code--found in meteorites were created in space, lending credence to the idea that life is not homegrown but was seeded here by asteroids, meteorites, or comets sometime in Earth’s early lifetime.
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Life on Earth may have its origins in outer space, according to Nasa research.

Scientists have analysed meteorites that formed billions of years ago before falling to Earth.

For 50 years, scientists have debated whether the components of DNA — the molecule central to all life on Earth — could spontaneously form in space. A new analysis of a dozen meteorites found in Antarctica and elsewhere presents the strongest evidence yet that the answer is yes.

Meteorites are space rocks that have fallen to the ground, and the new report bolsters the notion that heavy meteorite bombardment of the early Earth may have seeded the planet with the stuff of life.

The discovery has added to a growing body of evidence that the chemistry inside asteroids, meteorites and comets is capable of making building blocks of essential biological molecules.


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