Liam and Phoebe, having barely escaped the exploding sun with their lives, travel to the rogue planet Delphi, where they hope to find help for their injured parents and pass along the truth they discovered about the destruction of Earth.
Captain Raptor and the crew of the Megatooth rush to help rescue scientists from the planet Mammalia who are trapped on Pyros Prime, an unstable planet with exploding volcanoes.
"Eleven-year-old Alex Petroski, along with his dog, Carl Sagan, makes big discoveries about his family on a road trip and he records it all on a golden iPod he intends to launch into space"--