(From the publisher):
Buster is sure he saw a UFO, but no one believes him. When Buster borrows Muffy's telescope and photographs what he sees, the Brain has a simple explanation for every picture. But then Buster discovers a comet heading straight for the earth! Will he be able to convince his friends that they need to listen to him this time?
Original title: Arthur and the Comet Crisis
Genre: Fiction→ Children & Young Adult→ Early Readers/beginning Chapter Books