Komarr (Miles Vorkosigan Adventures)

Komarr could be a garden - with a thousand more years work. Or an uninhabitable wasteland, if the terraforming fails. Now the solar mirror vital to the terraforming of the conquered planet has been shattered by a ship hurtling off course. The Emperor of Barrayar sends his newest Imperial Auditor, Lord Miles Vorkosigan, to find out why.