Bruce Murray Space Image Library
Ice World Canyon
![Ice World Canyon](https://planetary.s3.amazonaws.com/web/assets/pictures/_1200x720_crop_center-center_82_line/20190305_cover-back-Ron-Miller-ice-world-canyon-w-explorer_small.jpg 1200w, https://planetary.s3.amazonaws.com/web/assets/pictures/_768x460_crop_center-center_60_line/20190305_cover-back-Ron-Miller-ice-world-canyon-w-explorer_small.jpg 768w, https://planetary.s3.amazonaws.com/web/assets/pictures/_576x345_crop_center-center_60_line/20190305_cover-back-Ron-Miller-ice-world-canyon-w-explorer_small.jpg 576w)
Miller placed a hypothetical Earth-sized ice world in orbit around a gas giant. He writes: “Covered with glaciers as deep as Greenland’s ice cap, the landscape is one of vast, canyon-sized cracks and fissures. With its sun only a distant, tiny star much smaller and dimmer than Earth’s, its future explorers would have to contend with temperatures falling below –200 degrees Celsius (–400 degrees Fahrenheit).” Ron Miller, <a href="/multimedia/space-images/universe/www.black-cat-studios.com">Black Cat Studios</a>