Blocks of Life May Have Extraterrestrial Origin
As per a new experiment reported in the Astrophysical Journal, replicating conditions in deep space had showed that linked pair of amino acids that are the essential building blocks of all living beings could have been created on the icy interplanetary dust and then carrying it to earth would have helped them start life.
Chemists from the University of California - Berkeley and the University of Hawaii did this discovery and hope that there is possibility of bringing these molecules to earth through comets or meteorites which would be helpful in formation of various proteins, enzymes and some more complex molecules like sugar. Scientists are of the view that the comets attacking the earth surface since the time of its formation would have carried the building blocks of life with them since then.
In this experiment, scientists chilled a vacuum chamber carrying the mixture of chemicals like ice, carbon dioxide, ammonia, and various hydrocarbons such as methane, ethane, and propane and chilled it to 10 degrees above absolute zero. When it was destroyed to simulate cosmic rays in space with the high-energy electrons, the chemicals reacted to form complex, organic compounds of dipeptides (linked pairs of amino acids), which are essential for life on earth.