Forbidden World. Star Ascension, #3

Chris and Liz arrive on a desperate mission to explore a dead world. What they find could change the universe. Earth has powerful enemies. It needs powerful weapons to defend itself. Alien races, the Don and the Ponohejon are planning to destroy humanity. Earth military and scientists cobble together a space craft from two different alien ships. They give it an experimental faster than light drive that none of the other alien races have. They entrust this precious vessel of incalculable value to two civilians.
And one spy. Sending them to a long extinct alien race's home world. Two thousand years ago, the world of Dendon was home to the most advanced race in the galaxy. Someone murdered them. An entire race. An entire world. The alien races of SixUnion declared the planet forbidden to all. Now Earth's only hope may be a dangerous mission to find Dendon's most powerful weapons. Both Chris and Liz carry pieces of ancient Dendon technology within them.
Will it give them the edge to face down what awaits on the forbidden world? The people of Dendon may be dead. Their technology isn't. Not at all. It still protects a dead world of dust and wind and empty buildings. The secrets of a long dead alien race await in the third adventure in the Star Ascension series.