The Gravity of Us by Phil Stamper

As a successful social media journalist with half a million followers, seventeen-year-old Cal is used to sharing his life online. But when his pilot father is selected for a highly publicized NASA mission to Mars, Cal and his family relocate from Brooklyn to Houston and are thrust into a media circus.

Amidst the chaos, Cal meets sensitive and mysterious Leon, another “Astrokid,” and finds himself falling head over heels—fast. As the frenzy around the mission grows, so does their connection. But when secrets about the program are uncovered, Cal must find a way to reveal the truth without hurting the people who have become most important to him.