The Adventures of RiRi: Stars Stars is a children's book. Stars Stars is a science and astronomy themed bed time story.\nStars Stars is the first book of the series The Adventures of RiRi. This science and astronomy themed book explores the question, \"what happens to the stars during the day?\" The Adventures of RiRi is a children's book series based loosely on Darius Good's youngest daughter, Riley. The series explores different themes such as science, music, family dynamics and more.