This incredible video by Scott Manley/Armagh Observatory graphically provides 20-years of observation leading humanity to have a map of the asteroids in a number that appears to be growing by the day with the work of the WISE. [Above vid best viewed FULL SCREEN, look bottom left for data.]
Linked is more from UniverseToday and an important PSA message RTvid from one of the leaders of the Space Frontier Foundation.
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