Humans may be aliens as we may have come from planet trillions of miles away

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LIFE on Earth may have come from a planet trillions of miles away, scientists suggest — meaning that we may be aliens.

The chemical “building blocks” of our DNA have been detected for the first time in asteroids that hit our planet billions of years ago.

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Scientists have discovered life on Earth may have come from a planet trillions of miles away — meaning we could be aliensCredit: Getty

It means the seed of life was probably planted here from elsewhere in the universe — and humans could be thriving on other planets far, far away.

Samples from three carbon-rich meteorites, called Murchison, Murray and Tagish Lake, were analysed using top techniques.

Prof Yasuhiro Oba, of Hokkaido University, Japan, said: “We found a diverse range of organic materials, including nucleobases — our basic building blocks of life.

“These could have been delivered to the Earth on asteroids, meteorites, comets and interplanetary dust particles four ­billion years ago when our planet was being bombarded by debris from outer space.

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“We believe the influx of these organics played an important role in the evolution of life on Earth.

“This is a very exciting discovery which expands our understanding of how life started.

Two types of chemical building blocks, or nucleobases, are needed to form DNA and RNA — the basis of life on Earth.

These are called pyrimidines and purines.

Previously, only purines have been identified in meteorites.

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But Prof Oba’s team detected pyrimidines in lab experiments simulating conditions in the interstellar media — the space between stars.

The findings are in a new study ­published in Nature Communications.



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