The Local War
by Steve Challis
The Flagship of the Earth fleet investigates the homeworld of aliens who have been wiping out life in 30 galaxies galaxies.
The 11 year old tele-empathic twins Chance and Nigel play a vital part in the investigation with Chance taking a shuttle and getting marooned on the planet.
He has to cope with hostile aliens, bloodsuckers and nocturnal predators.
This book makes fun of sci-fi ideas.