Everyone's a Aliebn When Ur a Aliebn Too, which he signs tonight. The story follows a confused, sad alien sent to study Earth, where he has funny, heartfelt, almost philosophical (and often misspelled) exchanges about loneliness, friendship and self-esteem with everything from stars, flowers and grass to animals and eggs. For example, a conversation with a tree reads: "A friend is anyone or anything that shares a life with u that you would never be able to experience without them."
Jonathan Sun is a Ph.D. student at MIT and a fellow at Harvard's Berkman Klein Center. On Twitter, he's Jomny Sun, an "aliebn confuesed abo humamn lamgauge," with nearly a half-million followers. Sun's online alter ego inspired his new book,