SOLVED. YA Sci-Fi. Molly, brother & father live in house that floats in space like small planet. Father goes missing & house is invaded? Children flee & meet pirates led by Jack who's from Venus. Title: Star ____? Read around 2016-2018. Spoilers ahead. [s]

[Kasey]

Book title might begin with "Star", A father, son and daughter live in a house that floats in space like a small planet. Daughters name is for sure Molly. I think the father goes missing and then their house is invaded? The children flee and meet pirates, leaders name is Jack. His crew has a giant crab and a woman with lizard-like anatomy? (There are more people I cannot remember). The pirates agree to help the kids, Jack and his crew are from some possibly English or London area and were taken to some laboratory to be studied, they escaped. Jack is from Venus and was taken when he was a child as the only surviver to a disease that turned his people into trees. They do eventually find their father, mother too who they thought had abandoned them. The villains are some spiders trying to take over the universe? Jack and Molly fall in love over the course of the story and the mother is some super old being who lived a long time.

[Kris]

Kasey, is this book for kids or teens? I guessed middle grade.

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[Genesistrine]

This is Philip Reeve's Larklight. Every detail fits, except her name is Myrtle.

[Kasey]

Yes! Thank you! I only remembered the book as "Start" so I later assumed it was in the title. I have been trying to find this out for forever!

[Genesistrine]

Glad to help! And you have 2 more in the series to enjoy as well.