“Stay here and be safe,” said Jack. “We’ll be back soon.” Jack swung himself over the windowsill. His feet touched the floor of the landing chamber. “Annie!” he called. There was no answer. Jack looked at his diagram. It showed only one way to go. Jack walked along the curved white wall to the stairs. He climbed the steps to a hallway. "Jack-hurry!” Annie was at the end of the hallway, standing in the airlock. She peered out a window in a giant door. Jack hurried toward in a giant door. Jack hurried out a window, too. “Oh, man,” said Jack. What he saw took his breath away