From baking challah to playing Shabbat afternoon games, young scintists get to experience what Shabbat might look like after people land on the Red Planet. 
Full of fun, zany illustrations, this exciting and informative middle grade nonfiction book compares Shabbat on Earth with Shabbat on Mars, making predictions about a future Martian Shabbat based on the most current scientific ideas. And it was written by a real rocket scientist!