KINGSPORT — What makes stars and black holes tick? Sullivan South High School student Aidan Henopp might find out in the future. This summer, thanks to QuestBridge, he won transportation and expenses to participate in the Summer Science Program in Astrophysics, an experience that otherwise would cost more than $8,000, but was provided free by the nonprofit program. As a senior, Henopp is seeking to win a four-year QuestBridge scholarship at a nationally renowned university in astrophysics, which would be worth more than $65,000 per year. “MIT and Cal Tech are my two major ones,” Henopp said of his universities of choice. Henopp will turn 18 in May, the same month he will graduate from South and his mother, Katrina Henopp, will graduate with a double major bachelor’s degree in biochemistry and behavioral neuroscience from East Tennessee State University.