Halley Harper, Science Girl Extraordinaire: Race to Outer Space (Paperback) (ISBN-13: 9781732528543)

In the final book of the series, Halley Harper's science experiment has finally made it into outer space and if successful, will change the space program forever! But as always, Miss Disaster strikes again and her experiment causes the space station to lose power and go completely dark! How will she save the astronauts trapped in the space station from being lost in outer space? Can she beat Nathan, her camp crush, to be the first thirteen-year-old astronaut? Where in the world is Ms. Mac and will Halley be able to find her before it's too late?