Editor's Summary
19 May 2005
In the red
Early next month the MARSIS instrument onboard Europe's orbiting Mars Express spacecraft is scheduled to begin scanning the northern hemisphere of Mars. If all goes well, it will be the first of a new generation of planetary radar experiments to see action. MARSIS will use ground-penetrating radar to probe below the surface to look for the apparent presence or absence of reservoirs of groundwater — but that is only part of the story.
News Feature: Mars exploration: Going underground
A new generation of planetary radar aims to look deeper than ever into some of the Solar System's most enduring mysteries. Tony Reichhardt gets ready for a trip to the interior.
doi: 10.1038/435266a
