The Boy Who Cried Comet! & Arthur and Los Vecinos

The Boy Who Cried Comet!: Buster thinks he has seen a UFO, but no one believes him because he has said he has seen a UFO too many times. He borrows Muffy's telescope and finds a comet headed for earth. No one believes him, but this time he has proof. They discover that the telescope is malfunctioning.
Arthur and Los Vecinos: A new family is moving in next to the Reads after their neighbor, Mr. Sipple, moves away. The Reads get to know the Molinas and discover how similar they are.