Larklight: Or the Revenge of the White Spiders! or to Saturn's Rings and Back!: a Rousing Tale of Dautless Pluck in the Farthest Reaches of Space

In an alternate Victorian England, young Arthur and his sister Myrtle, residents of Larklight, a floating house in one of Her Majesty's outer space territories, uncover a spidery plot to destroy the solar system.