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Geobiology: February 2014


How Deep Inside Our Planet Can Life Exist?

The Sun was once thought to provide energy for all life on Earth - meaning that life could not survive without it. In the 20th century, as astrobiologists began to explore the Earth's most remote and harsh environments, scientists began to question that assumption.

With the help of a tiny fragment of zircon extracted from a remote rock outcrop in Australia, the picture of how our planet became habitable to life about 4.4 billion years ago is coming into sharper focus.

Astrobiologists supported by the NASA Astrobiology Institute have shown that mineral species on the early Earth may have been different than the ones found on our planet today.