: SUBSCRIBE TO NEW SCIENTIST Select a country United Kingdom USA Canada Australia New Zealand Russian Federation Other Log in Email Password Remember me Your login is case sensitive I have forgotten my password Register now Activate my subscription Institutional login Athens login close My New Scientist Home News In-Depth Articles Blogs Opinion TV Galleries Topic Guides Last Word Subscribe Dating Look for Science Jobs SPACE TECH ENVIRONMENT HEALTH LIFE PHYSICS MATH SCIENCE IN SOCIETY First map of most violent world in the solar system 17:44 21 March 2012 Picture of the Day Lisa Grossman , reporter , and Caroline Morley , online picture researcher Image : USGS The US Geological Survey published the first global map of Io , Jupiter's innermost moon this week . Because the gigantic mass of