How common are the building blocks of life?
Organic molecules, containing atoms of carbon, hydrogen, oxygen and nitrogen, are the building blocks of life. They turn out to be abundant in the Universe.
Over the past decades, astronomers have detected many dozens of different organic (carbon-bearing) molecules in interstellar space. They range from simple carbon monoxide (CO) to more complex compounds like propanal (CH3CH2CHO) and glycolaldehyde (C2H4O2) – a simple form of sugar. Submillimetre telescopes like ALMA have revealed the existence of organic molecules in protoplanetary discs around infant stars. Almost everywhere, the stage appears to be set for the emergence of life.
The smallest building blocks of living things are organic molecules. They have been found all over the Universe. Does this mean that there is life out there, too?