about 6.022 x 10^23
Carbon-12 is the most abundant, and most stable form of carbon accounting for almost 99% of carbon atoms. Carbon is also the building block of life as we know it.
Is this a coincidence? A message reminding us that there is life somewhere in the observable universe? Or a sign that there is a universal constant of life?
This number is also equal to Avragado’s number, one of the most important constants in modern day chemistry.