The substance that makes human beings appear out of the world

Scientists have found a basic compound of life in meteorite dust. This is the latest evidence of the possibility of living organisms outside the Earth.

American Stardust spacecraft collected dust and gas from Comet Wild 2 in 2004. After analysis, scientists from the US Aerospace Agency (NASA) discovered in dust and gas traces of glycine amino acid. This makes people more confident in the hypothesis of the existence of life somewhere in the universe.

' Traces of glycine in comets give us more evidence that substances that make life exist in the universe. Perhaps living objects are not as rare as we thought , 'said Carl Pilcher, a NASA astronomer.

Illustration of the Stardust ship near the Wild 2 comet for dust and gas.
(Photo: NASA)

Jamie Elsila, the leader of the research team, speculates that the basic compounds that make up humans can come from the universe.

'Our results support the hypothesis that some of the raw materials of life have formed in space. Then comets and meteors brought them to Earth , 'Elsila said.

20 types of amino acids are arranged in different ways to create millions of proteins. These proteins ' produce ' everything in the body, from feathers to enzymes.

Elsila said that Earth is not the only celestial body with amino acids. ' We found glycine on comets with carbon isotopes that we never knew. That proves that the amino acid is derived from that comet , 'Elsila said.