What does astronomical mean? That word is part of our vernacular yet I feel we don't give it the due it deserves. If you look at the definition from the Oxford dictionary you will find: 1. Relating to astronomy. ‘astronomical observations’ 2. informal (of an amount) extremely large. ‘he wanted an astronomical fee’ But what is extremely large? Really, really large :) Just kidding of course, but I think these terms do not illustrate the proper meaning of the word. To provide context of how astronomical our known...