Europe's first mission to the moon is due to crash-land in a cloud of dust and rock on Sunday, ending a three-year voyage that gathered data about the lunar surface and tested a new engine intended to propel future spacecraft to Mercury and other planets. The European Space Agency's SMART-1 should hit its target on a volcanic plain called the Lake of Excellence at 5.41 am GMT, orbiting lower and lower as it makes its final approach at 2 km per second, or 7,200 kmph. Observatories on Earth will try to capture images of the impact and the resulting debris cloud, and European space officials hope their study of the debris will provide information about the minerals present at the impact site.