Earth star

Eighteen-year-old Jarra, one of the unlucky few born with an immune system that cannot survive on other planets, derided as an "ape" and a "throwback" by the rest of the universe, is on a mission to prove that Earth Girls are just as good as anyone else, except now the planet she loves is under threat by what could be humanity's first ever alien contact, not only is her specialist knowledge and bravery challenged, but she must discover if the rest of the universe considers Earth worth fighting for.