The Wanderer

In the future, men and women have colonized the moon, and dazzling technological advances have created a better life for those on earth. But the arrival of "The Wanderer" may change all that. A sphere of immense size, it appears suddenly one night during a lunar eclipse, causing crushing quakes on the moon and catastrophes on earth. Now Lt. Don Merriam must find a way to reach the Wanderer and discover its purpose.