Rosaly M. C. Lopes is a principal scientist at NASA's Jet Propulsion Laboratory and the investigation scientist for the Cassini radar instrument. She is an expert on terrestrial and planetary volcanism and the author of The Volcano Adventure Guide, Volcanic Worlds, and Io after Galileo. Michael W. Carroll is a science writer and artist specializing in astronomical imagery. His work has appeared in Time, National Geographic, Popular Science, Astronomy, and a host of other popular and scholarly publications.
Michael Carroll is a science artist and journalist, who has been called in by various museums to render detailed drawings and paintings of scientific exhibits. Caroline Carroll is also a writer and artist. They've interviewed and have close working relationships with many paleontologists and other scientists. Their latest devotional called Absolutely Awesome, was published by Tyndale in February 2000, and Dinosaurs, published by Cook, was a Gold Medallion finalist in the elementary category this year. They are the authors of the 'A Child's Guide to' science series published by Cook in the 1990s.