This 253 page E-Book of 95,000 words is the fourth book in a series about a wealthy family of the future. The Houstons adventure into space where they take on space pirates and many kinds of aliens. As technology advances, so do their ships until they pilot the most advanced ship in the universe. The risks, thrills and challenges of space exploration are many and diverse - even to the point of occasionally having to struggle against Earth Defense Forces. Titles in this series: 1. Adventures of Space Cadets 101: Space Pirates, Allies, and Aliens 2. Adventures of Space Cadets 101: Invasions 3. Adventures of Space Cadets 101: Weddings 4. Adventures of Space Cadets 101: Back At It on Two Fronts 5. Adventures of Space Cadets 101: Captain Kirk ... Houston 6. Adventures of Space Cadets 101: ISIS