This specialty type of ebook tends to be very reliant on imagery, either or both as inline graphics or page background images, and sometimes even as spread - spanning images. (iampariah.com)
Main section with a white background set on a light beige page background. (hloom.com)
Related sites Abstract of Ibata et al. paper, with link to full text Scott Chapman's home page Background on Andromeda galaxy Isaac Newton Telescope, used in new survey (sciencemag.org)