Tyson's effect on Esteban and his life could be best described by ethos.
Step-by-step explanation:
Ethos is a word that best describes the guiding beliefs or ideals that characterize a community, nation, or ideology. A man's character or personality can be explained by ethos; it also explains the balance between passion and caution.
Aristotle is a Greek philosopher, he coined the word “Ethos”.
Esteban responds that Neil deGrasse Tyson is his hero and he wants to give back to his own culture through spreading scientific knowledge, just like Tyson did. In the above statement, ethos best describes the Tyson's effect on Esteban and his life.