There are few bigger questions than how life first got started on Earth, but trying to put in the detective work almost 4 billion years after the event is understandably hard going for scientists. Now it looks as though we might have found another cl
are the organic compounds that make up peptides. The new study demonstrates how a chemical precursor called amino ketene – which can form the amino acid glycine – can be created in cosmic conditions and without any water present. In fact, the water stage can be skipped.
The team used an ultra-high vacuum chamber to mimic space and substrates to mimic dust particles to show a reaction pathway that works at about one quadrillionth of normal air pressure and at a temperature of minus 263 degrees Celsius .Amino ketene was also detected in the experiments, and the highly reactive nature of amino ketene molecules was probably key to the reaction happening at all, the researchers say – otherwise, it would simply have been too cold to work.
"Investigations showed that under these conditions, the peptide polyglycine was formed from the simple chemicals,""These are therefore chains of the very simple amino acid glycine, and we observed different lengths. The longest specimens consisted of eleven units of the amino acid."
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