The Quicksilver: Book One of The Quicksilver Chronicles

While on school camp, fifteen year old Wynter Barnes and five other students discover a strange silver shuttle secreted in the Australian bush. The discovery leads them to a powerful star-ship called The Quicksilver. Against their will, the group of school kids is plunged into a dangerous world of covert terrorist groups, a hidden organisation called the Earth Defence Union, and a galaxy full of violent aliens hell bent on destroying Earth. Together they must put their differences apart and find a way to use the unimaginable power of The Quicksilver, to defend Earth from imminent destruction.