Travel with the brother-sister duo, Jack and Annie, in their Magic Tree House as they discover a note that asks them to answer a series of six questions about space. With the help of the astronomer, the Internet, an astronaut, books and the writer of the mysterious note, Jack and Annie are taken on a wondrous journey of adventure and learning.

This exciting voyage will carry visitors to the planets and far out into the Universe where Jack and Annie nearly get… Well, we don’t want to give it away. The adventure is just beginning!