However, it's not yet fully understood how the complex organic molecules found in hot cores come to be. (aasnova.org)
In our galaxy, complex organic molecules are often found in the intense environments of hot cores — clumps of dense molecular gas surrounding the sites of star formation. (aasnova.org)
Because they are so massive, O - type stars have very hot cores and burn through their hydrogen fuel very quickly, so they are the first stars to leave the main sequence. (en.wikipedia.org)