Caleb Scharf

Caleb Scharf is the award-winning author of The Copernicus Complex (a 2014 Sunday Times Science Book of the Year) and Gravity's Engines. He is the director of the Columbia Astrobiology Center and has written for The New Yorker and Nature, among other publications. He lives in New York City with his wife and two daughters.

Ron Miller is a Hugo Award-winning illustrator and author whose work has appeared in National Geographic. He served as the art director for the National Air and Space Museum's Albert Einstein Planetarium. He lives in Virginia.