Download or read book Gravity written by Tess Gerritsen and published by Simon and Schuster. This book was released on 2021-06-29 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: An organism harmless on earth where it is subject to gravity terrorizes a research station in space. Scientists die violently and from their insides spill creatures that are part human, part frog and part mouse.