Europe's lunar satellite, the Smart 1 probe ended its three-year voyage this morning by crashing into the moon's surface at 4,475 mph.
The probe's violent end was observed by the Canada-France-Hawaii optical/infrared telescope located atop Mauna Kea, in Hawaii.
Scientists hope the impact kicked up a big enough lunar "soil" to enable them study its composition using ground telescopes.
Smart 1's crash was expected to leave a 3m by 10m (10ft by 30ft) crater on the Moon, spreading debris over 80 sq km (30 sq miles).
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