The Soviet Union shocks the world by placing a satellite in orbit and accomplishing many impressive feats high above Earth. The United States must prevent its Cold War rivals from controlling space, so President John F. Kennedy gives a transcendent challenge to the nation-land a man on the Moon by the end of the decade. NASA gathers talented engineers and astronauts to achieve the audacious goal.

The Ever-Changing Moon tells the story of three astronauts-John Young, Ken Mattingly, and Charlie Duke-who fly on Apollo 16, a mission that changes the way we understand the Moon. They are integral to many historic moments during Apollo. Book One: First Footprints examines their contributions to the first lunar landing. Experience the triumph and tragedy of human spaceflight and discover why Apollo flight controller Jerry Bostick says about the book, "There is nothing out there like this."

"I believe you have captured the details about the Apollo 11 descent operations better than anything I have read previously. Very unique approach, and I am glad you are drawing in many names that otherwise might not be in a book."

• Steve Bales, Apollo Flight Controller

"Yours stands as the best description I have seen to date of the mission rules/simulation process."

• Doug Ward, NASA Public Affairs Officer