  On 13 December 2012, Chang'e-2 completed a successful flyby of the near-Earth
asteroid 4179 Toutatis at a closest distance of 770 meters from the asteroid's
surface. The observations show that Toutatis has an irregular surface and its
shape resembles a ginger-root of a smaller lobe (head) and a larger lobe
(body). Such bilobate shape is indicative of a contact binary origin for
Toutatis. In addition, the high-resolution images better than 3 meters provide
a number of new discoveries about this asteroid, such as an 800-meter
depression at the end of the large lobe, a sharply perpendicular silhouette
near the neck region, boulders, indicating that Toutatis is probably a
rubble-pile asteroid. Chang'e-2 observations have significantly revealed new
insights into the geological features and the formation and evolution of this
asteroid. In final, we brief the future Chinese asteroid mission concept.
