During its approach, Rosetta has trained its navcams and OSIRIS camera at the comet, which sent back dramatic pictures of Churyumov — Gerasimenko; revealing it to be craggier and sharper
edged than the asteroids and moons previously explored that had been worn down by billions of years of meteor impacts.
Burning through the atmosphere at 45,000 mph, the
asteroid's leading
edge hit the Gulf of Mexico while its other end was still higher
than a cruising 747.